Question

A circular wireof diameter 42 cm is bent in the form of a rectangle whose sides are in the ratio 6 : 5. What is the are of the rectangle

Answer 1

Step-by-step explanation:

diameter = 42 cm

radius= 21 cm

circumfrence= 2πr

= 2×π×21

=131.946891

let's consider the rectangle.

let length and breadth be n

so length and breadth are 6n and 5n

circumference = perimeter of rectangle.

131.946891= 2 ( 6n+5n)

131.946891= 2(11n)

131.946891= 22n

n = 131.946891÷ 22

n= 5.99758595

now area can be found using l×b formula