Formation of Solid Shapes

Q. ntIf the edge length of a cube is 400 pm, its body diagonal is?n

Q.

What is a flat surface of a solid called?

Q.

A solid whose base is a plane rectilinear figure and whose side faces are triangles, having a common vertex is called a ___

1. Pyramid

2. Prism

3. Cylinder

4. Cuboid

Q.

The solid that can be made by folding the given net is ___.

1. Square pyramid

2. Triangular pyrism

3. Rectangular pyramid

4. Triangular pyramid

Q. Determine position of center of mass for the remaining portion of semicircular disc having radius a when small semi circular disc of radius b is removed from it.

Q. Match the nets to the respective solids:

1. Hexagonal Pyramid
2. Square Pyramid
3. Cylinder

Q. Which of the following can be used to obtain a cylinder?

1. Rotating a rectangle about its side
2. Stacking circles of same radius
3. Rotating a right angled triangle by its hypotenuse
4. Both (a) and (b).

Q.
Which among the following nets can be used to form cubes?

Q.

A cube is not a solid.

1. False

2. True

Q.

Which of the following solids can be formed using the given net?

1. 

2. 

3. 

4. 

Q. Is there any formula for calculating total resonating structure?

Q.

A cuboid has ____ vertices.

1. 8

2. 7

3. 6

4. 4

Q.

A cylinder can be obtained by

1. Both A and B

2. It cannot be formed

3. Rotating a rectangle about its side

4. Stacking circles of same radius

Q. What is the shape of:

(i) Your instrument box
(ii) a brick
(iii) a match box
(iv) a rod-roller
(v) a sweet laddoo.

Q. Give two new examples of each of the following three dimensional shapes:

(i) Coen
(ii) Sphere
(iii) Cylinder
(iv) Cuboid
(v) Pyramid

Q.

Name the solid which represents the room.

Q. If a right triangle is rotated about one of its perpendicular sides, then the 3D shape obtained will be a _______.

1. cylinder
   
2. rectangular prism
   
3. cube
   
4. cone
   

Q. Explain solid angle

Q.

A cylinder can be obtained by

1. Rotating a rectangle about its side

2. Stacking circles of same radius

3. Both A and B

4. It cannot be formed

Q. What is the shape of:

(i) Your instrument box
(ii) a brick
(iii) a match box
(iv) a rod-roller
(v) a sweet laddoo.

Q. Which of the following are solids?

1. Cuboid
2. Square
3. Cone
4. Rectangle

Q.
Which among the following nets can be used to form cubes?

Q.

The figure given above contains the following 2-Dimensional shapes.

1. Only triangles

2. Only rectangles

3. Both rectangle and triangle

4. None of these