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Plz help me to solve this all answer.



Plz help me to solve this all answer. ​-example-1
User Berniey
by
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1 Answer

2 votes

Explanation:

The formula of a circumference of a circle with radius r:


C=2\pi r

Solve for r:


2\pi r=C subtitute
\pi\approx(22)/(7)


2\cdot(22)/(7)r=C


(44)/(7)r=C multiply both sides by 7


44r=7C divide both sides by 44


r=(7C)/(44)

Substitute the values of the circumference from your question:


i.\ C=88cm\\\\r=(7\cdot88)/(44)=(7\cdot2)/(1)=12(cm)\\\\=================


ii.\ C=1.4m\\\\r=(7\cdot1.4)/(44)=(9.8)/(44)=(98)/(440)=(49)/(220)(m)\\\\====================


iii.\ C=16m\\\\r=(7\cdot16)/(44)=(7\cdot4)/(11)=(28)/(11)(m)\\\\=================


iv.\ C=33ft\\\\r=(7\cdot33)/(44)=(7\cdot3)/(4)=(21)/(4)(ft)\\\\=================


v.\ C=5m\\\\r=(7\cdot5)/(44)=(35)/(44)(m)\\\\===============


vi.\ C=66m\\\\r=(7\cdot66)/(44)=(7\cdot3)/(2)=(21)/(2)(m)\\\\================

User Marek Stanley
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