A wire is in the shape of a rectangle of length 18cm and width 15cm. It is reshaped and bent in the form of a circle. Find the radius and the area of the circle.
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According to the question
perimeter of rectangle = circumference of circle
2(l+b) = 2πr
(l+b) = πr
18+15 = πr
33 = 22/7 × r
r = 33 × 7/22
r = 3 × 7/2
r= 21/2
area of circle = π r² = 22/7 × (21/2)² = 11 × 3 ×21/2
Area of circle = 693/2 cm²
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