The sum of circumference and radius of a circle is 51cm, find the radius of circle?
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According to question,
Circumference of circle + Radius of Circle = 51 cm
2πr + r = 51
r(2π+1) = 51
r(2×22/7 + 1) = 51
r(44/7 + 1 = 51
r(44+7/7) = 51
r(51/7) = 51
r = 51 × 7/51
r = 7 cm.
Hence radius of circle = 7 cm.
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Circumference of circle + Radius of Circle = 51 cm
2πr + r = 51
r(2π+1) = 51
r(2×22/7 + 1) = 51
r(44/7 + 1 = 51
r(44+7/7) = 51
r(51/7) = 51
r = 51 × 7/51
r = 7 cm.
Hence radius of circle = 7 cm.
_____________________________________________________
☺ ☺ ☺ Hope this Helps ☺ ☺ ☺
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