If the perimeter of a semi-circular protractor is 36cm, find its diameter.( use π = 22/7)
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Answered by
3
Answer:
Step-by-step explanation:
Perimeter of semicircle = 2πr/2 = πr
36 = 22/7r
r = 36*7/22
r = 126/11
d = 2r = 252/11 cm
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Answered by
1
perimeter of a semi circular protractor will be=1/2*2πr+2r=36
----πr+2r=36
----r(π+2)=36
-----r(36/7)=36
-----r=7
therefore d=14
----πr+2r=36
----r(π+2)=36
-----r(36/7)=36
-----r=7
therefore d=14
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