Are Of Circle Is Given Find It's Diameter 1) 394.24 sq.cm
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Answer:
21.90cm
Step-by-step explanation:
Area of Circle =394.24sq.cm
Diameter = ?
Area of circle = πr^2
=> 394.24 =22/7 ×r×r
=> 394.24×7/22 =r×r
=> 119.84 = r×r
=> √119.84 = r
=> 10.95 = r
so, diameter= 2r
= 2×10.95 cm
= 21.90 cm
Ans: 21.90cm
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