Q6 of 20 Page 219

The base of a prism is triangular in shape with sides 3 cm., 4 cm. and 5 cm. Find the volume of the prism if its height is 10 cm.

Given, a triangular prism with base dimensions 3cm, 4cm and 5cm. and height is 10cm

Volume of this type of prism = area of base × height


The triangle is right angled triangle. Hence, area of base is × 4 × 3.


Volume = × 4 × 3 × 10


= 60cm3


More from this chapter

All 20 →
4

The volume of a cuboid is 1200 cm3. The length is 15 cm. and breadth is 10 cm. Find its height.

 5

How does the total surface area of a box change if

(i) Each dimension is doubled?


(ii) Each dimension is tripled?


Express in words. Can you find the area if each dimension is raised to n times?

 7

A regular square pyramid is 3 m. height and the perimeter of its base is 16 m. Find the volume of the pyramid.

 8

An Olympic swimming pool is in the shape of a cuboid of dimensions 50 m. long and 25 m. wide. If it is 3 m. deep throughout, how many liters of water does it hold?