The inner circumference of a circular track i | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Let the radius of the inner circle be $r$ and the radius of the outer circle be $R$.Given,inner circumference $= 2 \pi r = 440 \, cm$.Using $\pi =

Vedclass · Accepted Answer

$168$

Vedclass · Answer

(B) Let the radius of the inner circle be $r$ and the radius of the outer circle be $R$.Given,inner circumference $= 2 \pi r = 440 \, cm$.Using $\pi = \frac{22}{7}$,we have $2 	imes \frac{22}{7} 	imes r = 440$.$r = \frac{440 	imes 7}{44} = 70 \, cm$.The track is $14 \, cm$ wide,so the outer radius $R = r + 14 = 70 + 14 = 84 \, cm$.The diameter of the outer circle is $D = 2R = 2 	imes 84 = 168 \, cm$.

The inner circumference of a circular track is $440 \, cm$. The track is $14 \, cm$ wide. Find the diameter of the outer circle of the track? (in $cm$)

Similar Questions

In the given figure,$y$ is both the radius of the larger circle and the diameter of the smaller circle. Find the area of the shaded region.

How many cubes of edge $3\, cm$ can be cut out of a wooden cube of edge $9\, cm$?

Find the perimeter of a circular plot which occupies an area of $154 \, m^{2}$ (in $m$).

What will be the area of a semi-$circle$ whose perimeter is $36 \, cm$? (in $cm^2$)

The sum of the circumference of a circle and the perimeter of a square is equal to $272 \, cm$. The diameter of the circle is $56 \, cm$. What is the sum of the areas of the circle and the square? (in $cm^2$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module