A circular steel wire ring of radius 42 cm is cut and bent into the form of a rectangle whose side a...........

Quantitative Aptitude (CDS) Mensuration 2D

A circular steel wire ring of radius 42 cm is cut and bent into the form of a rectangle whose side are in the ratio of 6:5. Find the area of the triangle whose base is equal to rectangular length and height is equal to breadth?

118667.0 cm^2

118792.75 cm^2

100000.00 cm^2

111111.00 cm^2

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Explanation:

radius of circle is=42 cm
perimeter=2× π ×42
rectangular perimeter= perimeter of circle
=2 × π × 42
=84 π
rectangular side are 6x and 5x
(6x)(5x)=84π
x^2=84 ×(22/7)30
x^2=12× 22× 30
=7920
x=88.99
rectangular length and breadth are 533.96 cm and 444.95 cm
area of triangle is=1/2 × b ×h
=1/2 ×533.96×444.95
=118792.75 square cm