if a perimeter of a semi-circular park is 72 m, find area and radius
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Answered by
1
Perimeter of semi circle =pi r
So,
Pi r=72
R=72/pi
R=22.92m
Area of circle =pi r²
Pi (22.92)²=1650.11m²
Approx=1650m²
So,
Pi r=72
R=72/pi
R=22.92m
Area of circle =pi r²
Pi (22.92)²=1650.11m²
Approx=1650m²
Answered by
4
Hi ,
let the radius of the circular park = r m
perimeter = 72 m
πr + 2r = 72
r ( 22/7 + 2 ) = 72
( 36/7 ) r = 72
r = ( 72 × 7 ) / 36
r = 14 m
area of the semicircle = πr²/2
A = ( 22/7 ) × (14 × 14 )/2
= 308 square meters
I hope this helps you.
:)
let the radius of the circular park = r m
perimeter = 72 m
πr + 2r = 72
r ( 22/7 + 2 ) = 72
( 36/7 ) r = 72
r = ( 72 × 7 ) / 36
r = 14 m
area of the semicircle = πr²/2
A = ( 22/7 ) × (14 × 14 )/2
= 308 square meters
I hope this helps you.
:)
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