Mensuration Practice Test 8

Question : 39 of 40

Marks: +1, -0

The diagonal of a rectangle one of its sides and are 30 cm, 40 cm respectively. Find its area and perimeter.

Solution:

Area of the rectangle = l ×

√{d^2-l^2}

l = 30, d = 40
=

30√{40^2-30^2}

30√{1600-900}

30√{700} m^2

Perimeter of the rectangle =

2(l+√{d^2-l^2})

2(30 + √{40^2-30^2})

2(30 + √{1600-900})

2(30+√{700})

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