If area of a quadrant of a circle is 38.5 cm2 find it's radius
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12
Step-by-step explanation:
the radius will be 7 cm2
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Answer:
★ Radius = 7 cm
Explanation:
We know that,
area of quadrant = ( 1/4 ) πr²
Also, it is given that , area of quadrant = 38.5 cm²
Putting the values,
=> 38.5 = ¼ × 22/7 × r²
=> (38.5×7×4)/(22) = r²
=> 1078/22 = r²
=> 49 = r²
=> r² = 49
=> r = ±√49
=> r = ±7
Rejecting the negative value, we get,
★ Radius = 7 cm
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