Find semiperimeter of semi circle if area of this semi circle is 49/2π cm².
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Answered by
13
area of semi circle =1/2pi.r^2
49/2 pi =1/2pi.r^2
r^2=49
r=7cm
now
perimeter of semicircle =2r+pi.r
=2 x 7+ 22/7 x7
=14+22=36 cm
49/2 pi =1/2pi.r^2
r^2=49
r=7cm
now
perimeter of semicircle =2r+pi.r
=2 x 7+ 22/7 x7
=14+22=36 cm
Satwatneyearthian:
check ur answer
radius
Answered by
1
therefore area =πr²
πr²/2=49/2π
or, r²=49/π²
r=√(49/π²)
or, r= 7/π
semiperimeter of semicircle = πr + d/2
=( π×7/π + 14/π)/2
=(7π + 14)/2π
πr²/2=49/2π
or, r²=49/π²
r=√(49/π²)
or, r= 7/π
semiperimeter of semicircle = πr + d/2
=( π×7/π + 14/π)/2
=(7π + 14)/2π
hey area of semicircle =1/2pi.r^2
I'm right
I think area given of semicircle =49/2 pi.
not (49/2pi)cm^2
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