find the area of semicircle diameter 21cm using formula
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Answered by
19
radius =d/2=21/2=10.5cm
Area of semi circle =1/2*22/7*(10.5*10.5)
Area of semi circle =11/7*110.25
Area of semi circle =11*15.75
Area of semi circle=173.25cm2
Area of semi circle =1/2*22/7*(10.5*10.5)
Area of semi circle =11/7*110.25
Area of semi circle =11*15.75
Area of semi circle=173.25cm2
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Answered by
16
Hello..
Area of Semi-circle = (1/2) Π r²
Here r= 21/2cm and Π = 22/7
= (1/2) x (22/7) x (21/2)^2
= (1/2) x (22/7) x 21/2×21/2
= 1 1×3×21/4
= 33×21/4
= 693/4
= 173.25 cm²
hopes it will help u
thanks
Area of Semi-circle = (1/2) Π r²
Here r= 21/2cm and Π = 22/7
= (1/2) x (22/7) x (21/2)^2
= (1/2) x (22/7) x 21/2×21/2
= 1 1×3×21/4
= 33×21/4
= 693/4
= 173.25 cm²
hopes it will help u
thanks
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