The difference between the area of the circle and square of radius of circle is 105 sq. cm. Find the area of circle.
Answers
Answered by
4
Square of radius = r2
Area of circle = pie * r2
A.T.Q
pie * r2 - r2 = 105
r2(pie - 1 ) = 105
r2(22/7 - 7 / 7 ) = 105
r2(15 / 7 ) = 105
r2 = 49
r = 7 cm
Circumference = 2 * pie * r = 2 * 22 / 7 * 7 = 44 cm
Ans: 44 cm
Area of circle = pie * r2
A.T.Q
pie * r2 - r2 = 105
r2(pie - 1 ) = 105
r2(22/7 - 7 / 7 ) = 105
r2(15 / 7 ) = 105
r2 = 49
r = 7 cm
Circumference = 2 * pie * r = 2 * 22 / 7 * 7 = 44 cm
Ans: 44 cm
Answered by
1
154sqm is the area of circle
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