Area and Perimeter Practice Test 2

Question : 35 of 40

Marks: +1, -0

The base of a triangle is 15 cm and height is 12 cm. What is the height of another triangle of double the area having the base 20 cm?

Solution:

Area of triangle =

1/2

× 15 × 12 =

90 cm^2

Area of new triangle = 2 × 90

cm^2

= 180

cm^2

Since, height of new triangle =

{2×180}/{20}

= 18 cm

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