Q. 33.8( 18 Votes )

# If the length of diameter of the ball used for playing shotput in our school is 7 cm. let us write by calculating how many cubic cm of iron is there in the ball.

Answer :

__Given:__

Diameter of sphere = 7cm

__Formula used:__

1. Diameter of sphere = 2×Radius

Radius = 7/2 = 3.5cm

2. Volume of sphere = (4/3)×π×r^{3}

⇒ Volume of sphere = (4/3)×π×(3.5)^{3} = 179.67 cm^{3}

Rate this question :

The numerical values of volume and whole surface area of a solid hemisphere are equal, let us write the length of radius of the hemisphere.

West Bengal Board - MathematicsIf the ratio of curved surface areas of two solid spheres is 16 : 9, the ratio of their volumes is

West Bengal Board - MathematicsIf the ratio of the volumes of two solid spheres is 1 : 8, the ratio of their curved surface areas is

West Bengal Board - MathematicsIf curved surface area of a solid sphere is S and volume is V, let us write the value of [not putting the value of π]

West Bengal Board - MathematicsIf the length of diameter of a solid sphere is 28 cm and it is completely immersed into the water, let us calculate the volume of water displaced by the sphere

West Bengal Board - MathematicsThree spheres made of copper having the lengths of 3 cm. 4 cm. and 5 cm. radii are melted and a large sphere is made. Let us write by calculating the length of radius of the large sphere.

West Bengal Board - MathematicsThe length of radius of spherical gas balloon increases from 7 cm to 21 cm as air is being pumped into it let us find the ratio of surface arcas of the balloon in two cases.

West Bengal Board - MathematicsIf the length of diameter of the ball used for playing shotput in our school is 7 cm. let us write by calculating how many cubic cm of iron is there in the ball.

West Bengal Board - MathematicsIf numerical value of curved surface area of a solid sphere is three times of its volume the length of radius is

West Bengal Board - Mathematics