Question

5. How many persons can be accommodated in a hall of length 16 m. breadth 12.5 m and
height 4.5 m, assuming that 3.6 m of air is required for each person?
6. A cardboard box is 1.2 m long, 72 cm wide and 54 cm high. How many bars of soap can be
put into it if each bar measures 6 cm x 4.5 cm x 4 cm?​

Answer 1

Answer:

5. 250

6. 4320

Step-by-step explanation:

5.

Given:

Length = 16 m

Breadth = 12.5 m

Height = 4.5 m

Now,

Volume of the Hall = (16 x 12.5 x 4.5) m³

= 900 m³

No. of persons can be accommodated in 3.6 m³ of air = 1

In 900 m³ of air = 900 / 3.6

= 250 .ans.

6. Volume of the cardboard box = (120 x 72 x 54) cm³

= 466560 cm³

Volume of one soap = (6 x 4.5 x 4) cm³

= 108 cm³

No. of soaps can be put = Volume of the cardboard box / Volume of a soap

= 466560 / 108

= 4320