Pyramids

Q.

Find the surface area of the regular pyramid.

Q.

A tetrahedron is a triangular pyramid with four faces that are identical equilateral triangles. The total lateral surface area of a tetrahedron is 93 square centimeters. Find the surface area of the tetrahedron.

Q. What is the volume of a pyramid with a height of 6 cm and a square base with a side length of 4 cm?
${\text{cm}}^3$

Q.

What is the other name of a triangular pyramid?

Q. A Tetrahedron is also known as

1. Triangular prism
2. Triangular pyramid
3. Square pyramid

Q. How much sheet of metal is required to make a closed rectangular box of length 1.5 m, bredth 1 m and height 2 m?

Q.

A triangular pyramid is called a

Q.

What is the sum of the number of vertices, edges, and faces of a triangular pyramid?

1. $14$
2. $12$
3. $8$
4. $15$

Q. The side faces of a pyramid are:

1. square
2. rectangle
3. triangle
4. circle

Q.

What is the surface are of a pyramid with a square base length of 3 cm and a slant height of 4 cm?

1. $15{\text{cm}}^2$
2. $20{\text{cm}}^2$
3. $40{\text{cm}}^2$
4. $33{\text{cm}}^2$

Q. How many bricks of size 25 cm 15 cm 6 cm are required to make a wall 5 cm long , 2 m high and 50 cm thick , if 10% place is occupied by cement ?

Q. How much sheet of metal is required to make a closed rectangular box of length 1.5 m, bredth 1 m and height 2 m?

Q.

(a) Construct 3equations starting with x = 2

(b) Construct 3equations starting with x = − 2