CBSE Class 8 Mathematics Visualising Solid Shapes Assignment Set 03

Question. In the figure, lines PT and RU are parallel. What is the measure of the angle marked x?

(a) 770
(b) 830
(c) 970
(d) 1030

Answer : C

Question. A cube has the letters M and N on two of its faces. The other four faces are BLANK. This is one view of the cube:
Which of these is another view of the same cube?

Answer : C

Question. What is the minimum number of degrees by which the shape below has to be rotated (about its centre) so that it looks exactly the same as it does now?

(a) 9⁰
(b) 100⁰
(c) 180⁰
(d) 360⁰

Answer : D

Question. The top view of a school bus showing the arrangement of the passenger seats is shown below:
Which of the following is the correct way of counting the total number of passenger seats in the bus?

(a) 3 + 2 × 12 + 6
(b) 6 - 1 × 13 + 1
(c) 5 × 12 + 6
(d) 2 + 3 × 13 – 12

Answer : C

Question. If the above figure is turned by 270° in an ANTICLOCKWISE DIRECTION, which of these would be the result?

Answer : A

Question. Here is a letter pattern. Study it carefully and answer questions 32 and 33
How many times would you have written the letter 'c' if you complete writing this pattern up to the end of the TENTH row?

(a) 10
(b) 15
(c) 19
(d) 45

Answer : A

Question. Nimisha wants to draw a wheel like the one shown. Each shaded part of the wheel should be one third of each unshaded part. What should be the degree measure of the angle formed at the centre by each shaded part?

(a) 22.5°
(b) 20°
(c) 25°
(d) 30°

Answer : A

Question. Which of the following is NOT a correct way of finding the area of the square frame shown below?

(a) 52.22 - 47.82
(b) 2  x {(52.2 x  2.2) + (47.8 x 2.2)}
(c) 52.2 x  4.4 x  2 + 47.8 x 4.4 x 2
(d) 100 x (52.2 - 47.8)

Answer : C

Question. A small cube is cut off from a larger cube as shown below. For the ORIGINAL CUBE, WHICH OF THE FOLLOWING WILL REMAIN UNCHANGED?

(a) the volume
(b) the total surface area
(c) the number of edges
(d) The number of corners

Answer : B

Question. A rectangle EFGH is shown below: If the width of rectangle EFGH is decreased by 2 units, by how many units should the length be 

(a) 2
(b) 4
(c) 8
(d) 16s

Answer : B

Question. The formula for finding the perimeter (P) of a rectangle when the length (l) and breadth (b) are given isP = 2 (l + b). 
Which of the following is the correct sequence of steps to obtain the length of a rectangle when the perimeter and breadth are known?
(a) Subtract b from P and then divide the result by 2.
(b) Divide P by b and then divide the result by 2.
(c) Multiply P by 2 and then add b to the result.
(d) Divide P by 2 and then subtract b from the result.

Answer : D

Question. 1 millilitre (ml) can be defined as the volume of liquid that a cubical box of side 1 cm can hold. How many LITRES of liquid can the container  shown here hold?

(a) 2000
(b) 20
(c) 10
(d) 2

Answer : D

Question. A group of students from the Czech Republic are going to visit Farhan’s school. Farhan is asked to paint a Czech flag to put up in his classroom. The dimensions and colours of the flag are as shown:
If one vertex of the triangle is exactly at the centre of the flag, how much area would Farhan paint blue?

(a) 150 sq.cm
(b) 200 sq.cm
(c) 300 sq.cm
(d) 400 sq.cm

Answer : A

Question. Bablu has three sticks of lengths 3, 4 and 5 cm. Ramesh has three sticks of lengths 3, 5 and 9 cm. How many triangles can Bablu and Ramesh make with their sticks?
(a) Bablu: 1, Ramesh:  0
(b) Bablu: 2, Ramesh:  1
(c) Bablu: 1, Ramesh:  1
(d) Bablu: 0, Ramesh:  2

Answer : A

Question. What is the area of the shaded portion if the area of the circle is 56 sq cm?

(a) 12 sq cm
(b) 14 sq cm
(c) 14.8 sq cm
(d) 18.5 sq cm

Answer : B

Questions carrying 1 Mark each :-

Q.1 A joker cap looks like a ___________.

Q.2 A cuboid is ___________ dimensional.

Q.3 The top view of a cup is a pair of ___________.

Questions carrying 2 marks each:

Q.4 Give Euler's Formula.

Q.5 Write number of faces, number of vertices and number of edges of a cuboid.

Q.6 Can a polyhedron have 12 faces, 15 edges and 20 vetices? Explain.

Multiple choice Questions carrying 1 mark each:-

Q.7 The number of faces of a polyhedron if number of vertices are 6 and number of edges are 12 are:-

(a) 8

(b) 10

(c) 16

(d) 12

Q.8 The base of a square pyramid is

(a) Rectanular

(b) square

(c) Triangular

(d) None of these.