Question

In a triangle,if the length of the altitude is double the length of it's base and the area is 400 sq cm,find the length of base and altitude?​

Answer 1

Answer:

Correct option is

A

20 cm;40 cm.

Area of a triangle=

2

1

×base×height

Let, base=x cm, then height=2x cm

So, 400cm

2

=1/2×(x)×(2x)

⟹x

2

=

2

400×2

=400cm

⟹x=20cm

So,

base=20cm;height=40cm