find the perimeter in area of a semicircle whose radius is 5.6cm
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5
The perimeter is 17.696
thamarai25:
how
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Answered by
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Hi ,
radius of the
semicircle ( r ) = 5.6cm
1 ) perimeter of the semicircle
= πr + 2r
= 22r/7 + 2r
= r ( 22/7 + 2 )
= r ( 22 + 14 ) /7
= 36r/7
= ( 36 × 5.6 ) /7
= ( 36 × 0.8 )
= 28.8 cm
2 ) area of the semicircle
= π r²/2
= ( 22 × 5.6 × 5.6 )/ ( 7 × 2 )
= 11 × 5.6 × 0.8
= 49.28 square cm
I hope this helps you.
:)
radius of the
semicircle ( r ) = 5.6cm
1 ) perimeter of the semicircle
= πr + 2r
= 22r/7 + 2r
= r ( 22/7 + 2 )
= r ( 22 + 14 ) /7
= 36r/7
= ( 36 × 5.6 ) /7
= ( 36 × 0.8 )
= 28.8 cm
2 ) area of the semicircle
= π r²/2
= ( 22 × 5.6 × 5.6 )/ ( 7 × 2 )
= 11 × 5.6 × 0.8
= 49.28 square cm
I hope this helps you.
:)
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