The cross-section of the prism is a semi-circle with diameter 56 cm. ... (c) Find angle to 1 decimal place. â¦ ... Calculate the circumference of the circle.

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TIME ALLOWED 1 hour 30 minutes INSTRUCTIONS TO CANDIDATES • Answer all the questions. • Read each question carefully. Make sure you know what you have to do before starting your answer. • You are permitted to use a calculator in this paper. • Do all rough work in this book. INFORMATION FOR CANDIDATES • The number of marks is given in brackets [ ] at the end of each question or part question on the Question Paper. • You are reminded of the need for clear presentation in your answers. • The total number of marks for this paper is 80.

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Practice Paper GCSE Mathematics (Edexcel style) June 2018 Higher Tier Paper 3H

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Question 1. (a) Use your calculator to work out

9.32 + √98.05 0.253 Write down all the digits on your calculator display.

………………………………………………. (2) (b) Write your answer to part (a) correct to 2 significant figures. ………………………………………………. (1) (Total 3 marks) Question 2. Diagram not to scale

17 cm

𝑥 12 cm Work out the value of x. Give your answer correct to 2 significant figures.

x = ................................° (Total 3 marks) 2

Question 3.

Diagram not to scale 130cm

56 cm

The diagram shows a piece of wood. The piece of wood is a prism of length 130 cm. The cross-section of the prism is a semi-circle with diameter 56 cm. Calculate the surface area of the piece of wood. Give your answer correct to 1 decimal place.

………………………………cm2 (Total 4 marks) 3

Question 4. Work out the value of

5𝑝+ 𝑞2 2𝑝

, where 𝑝 = 4.7 × 103 and 𝑞 = 7.6 × 103.

……………………………………….. (Total 3 marks) 4

Question 5. Make a the subject of the formula 𝑃=

𝑛2 + 𝑎 𝑛+𝑎

............................................. (Total 4 marks)

Question 6. 313 Show that the recurring decimal 0.347̇ can be written as 900.

……………………………… (Total 3 marks) 5

Question 7. Dan and Sam each have an expression.

Dan

Sam

(x + 2)2 – 36

(x + 8) (x – 4)

Show clearly that Dan’s expression is equivalent to Sam’s expression.

(Total 3 marks) 6

Question 8. The diagram shows a semi-circle and a triangle. A Diagram not to scale

D

S

R

B

𝑥

C

𝑟

BC is a diameter of a semi-circle. Angle ABC = 90°. Area of S = Area of R. Angle ACB = 𝑥. The radius of the semi-circle is 𝑟. (a) Find the length of AB in terms of 𝑟 and 𝑥.

……………………………… (2)

𝜋

(b) Show that 𝑡𝑎𝑛𝑥 = 4 .

……………………………… (3) (c) Find angle 𝑥 to 1 decimal place.

………………………………° (2) (Total 7 marks) 7

Question 9. 𝐸 and 𝐹 are points on the circumference of a circle with centre 𝑂.

Diagram not to scale

𝐸

𝑂

𝐹

𝐸𝐹 = 10 cm and angle 𝐸𝑂𝐹 = 70°. Calculate the circumference of the circle. Give your answer to 3 significant figures.

…………………………………………….cm (Total 4 marks) 8

Question 10. A full-size snooker ball has a diameter of 2

1 16

inches and weighs 302.5g. 7

Calculate the weight of a snooker ball of diameter 1 8 inches, assuming that both balls are made of the same material. Give your answer to the nearest gram.

…………………………………………….g (Total 3 marks) Question 11. Given that x = 3.2 correct to 1 decimal place, find the interval that contains the value of 5𝑥 2 + 4. Give your answer as an inequality.

……………………………………………. (Total 3 marks) 9

Question 12. The speed and acceleration of a moving vehicle are connected by the formula 𝑣 2 = 𝑢2 + 2𝑎𝑠. If 𝑢 = 4√3, 𝑎 = √2 and 𝑠 = 7√2, Find the value of 𝑣. Give your answer in surd format.

𝑣 =……………………………………………. (Total 4 marks) 10

Question 13. 12 grams of pond weed was introduced into a pond. The weight of the weed in the pond 3 days later was 96g. The weight of the weed in the pond is growing exponentially. Work out the weight of the weed in the pond after 8 days.

(Total 4 marks) 11

Question 14. The sides of a triangle 𝐴𝐵𝐶 are tangents to a circle. The tangents touch the circle at the points 𝐷, 𝐸 and 𝐹. 𝐵𝐷 = 8 cm. 𝐴𝐷 = 9 cm. 𝐴 Diagram not to scale

9 cm

𝐹

𝐷 8 cm

𝐵

𝐸

𝐶

(a) (i) Write down the length of 𝐵𝐸. …………………………………………….cm (1) (ii) Give a reason for your answer. ……………………………………………………………………………………………………………… (1) The perimeter of the triangle 𝐴𝐵𝐶 is 56 cm. (b) Calculate the size of the angle 𝐴𝐵𝐶. Give your answer correct to 1 decimal place.

…………………………………………….° (4) (Total 6 marks) 12

Question 15. The diagram below shows a rectangular piece of paper 𝐸𝐹𝐺𝐻. 𝐸

2𝑥 + 2

𝐻

𝑥−2 𝐾 𝐼 2 𝐹

𝐽

3

𝐺

The rectangle has been folded along 𝐼𝐽 so that 𝐺 moved to 𝐾. (a) Find an expression for the shaded area in terms of 𝑥.

……………………………………………. (3) (b) Given that the shaded area is 10 cm2, prove that 𝑥 = √𝑥 + 10

……………………………………………. (2) (c) Use an iterative method to find the value of 𝑥 to 2 significant figures. Take 𝑥0 = 3

𝑥 =……………………………………………. (2) (Total 7 marks) 13

Question 16. A curve has equation 𝑦 = 4x2 – 8x + 25. (a) Write the expression 4x2 – 8x + 25 in the form a(x + b)2 + c.

……………………………………………. (4) (b) Find the coordinates of the minimum point of the graph.

……………………………………………. (1) (c) State if and where the graph of the equation crosses the x-axis. ……………………………………………………………………..…………………………………………. ……………………………………………………………………..…………………………………………. (1) (Total 6 marks) 14

Question 17. Find the equation of the tangent to (𝑥 + 1)2 + (𝑦 + 2)2 = 169 at the point (5, -12).

……………………………………………. (Total 5 marks) 15

Question 18. C

R

Q

A

Diagram not to scale

B

S

ABC is a triangle with angle ABC = 90°. S, Q and R are points on AB, AC and CB respectively such that angle QRC = angle ASQ = 90°. Prove that triangle CQR is similar to triangle QAS. Give a reason for each step of your proof.

(Total 3 marks) 16

Question 19. The diagram below shows a solid cone and a solid hemisphere.

𝑙

𝑥

𝑥

Surface area of sphere is 𝟒𝝅𝒓𝟐 Curved surface area of a cone is 𝝅𝒓𝒍 The surface area of the cone is equal to the surface area of the hemisphere. Express ℎ in terms of 𝑥.

ℎ =....................................................... (Total 5 marks) TOTAL FOR PAPER IS 80 MARKS 17

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