Challenger

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Question:

The ratio of the outer and the inner perimeter of circular path is 23 : 22. If the path is 5 metres wide, the diametre of the inner circle is:

A55 m

B110 m

C220 m

D230 m

Answer:

C. 220 m

Explanation:

If the radius of the outer circle is R1 and radius of the inner circle is R2 $\frac {R1}{R2} = \frac {23}{22}$ R1 = R2 +5 $\frac {R2 + 5}{R2} = \frac {23}{22}$ R2 = 110

diameter of the inner circle = 220

Related Questions:

Challenger

The ratio of the outer and the inner perimeter of circular path is 23 : 22. If the path is 5 metres wide, the diametre of the inner circle is:

C. 220 m

Explanation:

P : Q = 5 : 6 ഉം R : Q = 25 : 9 ഉം ആണെങ്കിൽ P : R ൻ്റെ അനുപാതം എന്താണ്?

Two cubes have their volumes in the ratio 1:27 Find the ratio of their surface areas

If P/3 = Q/4 = R/5 then P:Q:R is

A:B=3:2, B:C=4:5 ആയാൽ A:B:C എത്ര?