Question

The area of a triangle is 46cm2, if you double the base and height of the triangle, What will be the new area?

Answer 1

Step-by-step explanation:

Correct option is A)

Area of a triangle=

×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

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