A piece of wire in the from of a rectangle 8.9 cm long and 5.4 cm broad is reshaped and bent into the from of a circle . Find the radius of the circle.
Answers
Answered by
10
Perimeter of rectangle = 2 x (l+b)
2 x ( 8.9 + 5.4)
= 2 x 14.3 = 28.6 cm
Circumference of circle formed = 28.6
2 x 22/7 x r = 28.6
r = 28.6/6.28
r = 4.5 cm
Area = π r²
22/7 x 4.5²
= 63.58 cm ²
2 x ( 8.9 + 5.4)
= 2 x 14.3 = 28.6 cm
Circumference of circle formed = 28.6
2 x 22/7 x r = 28.6
r = 28.6/6.28
r = 4.5 cm
Area = π r²
22/7 x 4.5²
= 63.58 cm ²
Similar questions