Grade 6 / Measurement: Area

Your Turn Questions

1.

A square has an area of 100 cm2.

Which is the side length of the square?


A

10 cm

B

40 cm

C

25 cm

D

50 cm


2.

The area of an isosceles triangle is 18 cm2.

Which could not be the base and the height?


A

base = 9 cm, height = 2 cm

B

base = 6 cm, height = 6 cm

C

base = 24 cm, height = 1.5 cm

D

base = 18 cm, height = 2 cm


3.

Describe the steps you would take to build a triangle with an area of 15 cm2.

E.g., I would double 15 to get 30. Then I would look for two numbers that multiply to 30 and make one of those numbers the base and one the height.


4.

Once you have created a parallelogram with a certain area, why should it be fairly easy to create a triangle with that same area?

E.g., You could use the same base but a height that is double the parallelogram’s height.

G6 T11 After Lesson 5 — Duelling Areas