Question

What is the missing length?
10.2 cm
a
area=51 cm2

Answer 1

a = 10 cm

Explanation:

Area of triangle, A = 51 cm²

base, b = 10.2 cm

Let height of triangle be a cm

Formula:-

`A=(1)/(2)* a* b`

`51=(1)/(2)* a* 10.2`

`a=(51* 2)/(10.2)`

`a=10`

hence, the missing length is 10 cm