Question

The height of a triangle is 2 cm less than its base. The area of the triangle is 40 cm². What is the measurement of the base of the triangle?

6 cm
8 cm
10 cm
12 cm

Answer 1

Lets try trial and error

So A= 1/2 x h x b

For 6: 1/2 x 4 x 6

= 12, so no

For 8: 1/2 x 6 x 8

= 24 so no

For 10: 1/2 x 8 x 10

= 40 SO YES!!!!

Ans) 10 cm

Answer 2

10cm

Explanation: