a piece of wire is in the form of a rectangle whose length and breadth are 40 cm and 26 respectively it is bent in the form of a circle find the radius of the circle
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Answer:
radius = 21
Step-by-step explanation:
l= 40 cm ,b= 26
rectangle circumference = 2(l+b)= 2(40cm+26cm)
= 132 cm^2 ( this
is equal to )
circle circumference = 2πr = 2 (l+b)
= 2×22÷7×r = 132
r = 132×7 / 2×22
r= 132/44×7 = 3×7 =21
r = 21
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