The hollow sphere, in which the circus motor cyclist performs his stunts, has a diameter of 7 m. Find the area available to the motor cyclilst for riding.

Open in App

Solution

Diameter of hollow sphere = 7 m
$∴ R a d i u s (r) = \frac{7}{2} m$
Now its surface area
$= 4 π r^{2} = 4 \times \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} m^{2} = 154 m^{2}$

Suggest Corrections

193

Similar questions

Q. The hollow sphere, in which the circus motorcyclist performs his stunts, has diameter of

7 m

. Find the area available to motorcyclist for riding.

Q. A hollow sphere in which a circus motorcyclist performs his stunts, has an inner diameter of

7 m

. Find the area available to the motorcyclist for riding. (Take

π = \frac{22}{7}

)

In a circus, a motorcyclist performs his stunts inside a hollow sphere. The thickness of the sphere is negligible. If the diameter of the hollow sphere is 14 m, then find the area available for the motorcyclist to perform his stunts.
$(u s e π = \frac{22}{7})$

In a circus, a motorcyclist performs his stunts in a hollow sphere.Neglect the thickness of sphere. If the diameter of the hollow sphere is 14 m, then find the area available for the motorcyclist to perform stunts.(Take $π = \frac{22}{7}$ )

Join BYJU'S Learning Program

The hollow sphere, in which the circus motor cyclist performs his stunts, has a diameter of 7 m. Find the area available to the motor cyclilst for riding.

Diameter of hollow sphere = 7 m ∴ Radius (r)=72m Now its surface area =4πr2=4×227×72×72m2=154m2

Diameter of hollow sphere = 7 m
$∴ R a d i u s (r) = \frac{7}{2} m$
Now its surface area
$= 4 π r^{2} = 4 \times \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} m^{2} = 154 m^{2}$