Question

sum of circumstances of circle and perimeter of rectangle is 220cm while area of circle is 1386sq. cm. if length of rectangle is 33 1by3percent more than radius of the given circle then find the area of rectangle ​

Answer 1

Answer:

Area of a circle of radius r =πr

2

=1386cm

2

7

22

×r

2

=1386cm

2

r

2

=441cm

2

r=21cm

Circumference of a circle of radius r =2πr

Circumference of circle of radius 21cm=2×

7

22

×21=132cm