Question

Sohan's house has one bedroom hall with kitchen. His son needed a separate room for
study. Thus Sohan planned to construct a new room with length 4m, width 2m and the

height 3m as shown in the following figure. The room was separate at the roof of the

house. The dimensions of the bricks used are: 25 cm x 10 cm x 5 cm. (i) What is the total surface area of the new room ?

(a) 48 m2

(b) 50 m2

(c) 52 m2

(d) 56 m2

(ii) What is the volume of one brick ?

(a) 1250 cm3

(b) 1350 cm3

(c) 1150 cm3

(d) 2250 cm3

(iii) Find the area of four walls which is to be white-washed.

(a) 16 m2

(b) 20 m2

(c) 36 m2

(d) 26 m2

(iv) What is the volume of the room?

(a) 24 m3

(b) 12 m3

(c) 20 m3

(d) 15 m3

(v) What is the area of the floor?

(a) 10 m2

(b) 12 m2

(c) 8 m2

(d) 8 m3​

Answer 1

Step-by-step explanation:

(b) 20 m2

(c) 36 m2

(d) 26 m2

(iv) What is the volume of the room?

(a) 24 m3

(b) 12 m3

(c) 20 m3

(d) 15 m3

(v) What is the area of the floor?

(a) 10 m2

(b) 12 m2

(c) 8 m2

(d) 8 m3