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​​​2D Shapes: Quiz 7 - Answers

Part 1

1)

a) 15 cm2

b) 45 cm2

c) 17.5 cm2

d) 14 cm2

e) 24 cm2

f) 54 cm2

 

Part 2

1) 8 cm

2) 10 cm

3) 12 cm

4) 20 cm

5)

a)

b) Height = 4 cm

Base = 8 cm

Working
Questions
Do not use a calculator for any of the questions in this quiz.
 
Part 1
1) Find the area of the following triangles. 
Part 2

1) The area of the triangle below is 20 cm2. What is the height of the triangle?

2) The area of the triangle below is 35 cm2. What is the height of the triangle?

3) The area of the triangle below is 48 cm2. What is the length of the base of the triangle?

4) The area of a triangle is 130 cm2 and the height of the triangle is 13 cm. What is the length of the base of the triangle? Feel free to draw a diagram if it helps you.

 

5) The base of a triangle is twice the length of the height of the triangle.

a) Draw a diagram of the triangle labelling the height of the triangle x.

b) The area of the triangle is 16 cm2. What is the length of the base and the height of the triangle?