find the Radius of thr Semi Circle, if these chords are given
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27.3cm
Step-by-step explanation:
area = πr
but, πr - (area of semi circles done by the lines )
so, line 1 - a
line 2 - b
line 3 - c
area of a = πr
= 22/7× 6
= 132/7cm²
area of b = πr
=22/7×6
= 132/7 cm²
area of c =πr
= 22/7×14
= 22×2
= 44
now, πr - (132/7 + 132/7 + 44) = 0
πr - (602/7)= 0
πr = 86
r = 86 × 7/22
r = 43 × 7/11
r= 27.3 cm..
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