Question

the base of parellogram is twice its height. if the area is 512 cm2 find the base and the height

Answer 1

let the height be x
then base = 2x
A/Q
2x * x = 512
2x2 = 512
x2 = 256
x = 16cm

base = 16*2 = 32 cm
height = 16cm

Answer 2

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Let the base and height be 2x and x respectively.
Ar. Of ||gm = base * height
512=2x*x
512=2x^2
X^2=512/2=256
X=√256
X=16
Thus, height = 16cm and base = 2(16)=32cm

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Hope this helps....
:)