Question

18. Find the cost of corering the walls of a room, 12 m long 8 m broad and 10m high
with Rs. 2 postage stamps each measuring 1 1/4
cm by 1 cm.​

Answer 1

Answer:

96m

Step-by-step explanation:

Answer 2

Step-by-step explanation:

here we will count both sides of the wall .each side has area 12 multiplied by 8 I.e. 96 Sq.m

so for both sides 192 sq.m that is 1920000sqcm

each stamp is 11/4cm2

so so number of stamps is 698182 stamps . I took a round off rule to numberize the number of the stamps as they continue in decimals