Math

volume

100

Given, the dimensions of a cuboidal box: 11 cm × 8 cm × 13 cm

Here,

Length = l = 11 cm

Breadth = b = 8 cm

Height = h = 13 cm

1144cm³

200

What is the volume of a sphere of diameter 21 units?

Solution:

Given,

Diameter of the sphere = 21 units

Radius of the sphere = (21/2) units

Volume of a sphere = (4/3) πr3

4851

300

. A cuboidal block of wood was cut into eight equal cubes of edges 4 cm. Find the volume of the initial block of wood.

Solution:

Given,

Edge of a cubical wood = 4 cm

Volume of the cube = a3

64 cm3 

400

If three solid spherical beads of radii 3 cm, 4 cm, and 5 cm, respectively, are melted into one spherical bead, then find its radius in cm.

6

500

 How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?

6400