Question

9. The cost of preparing the walls of a room 12 m long at the rate of rs 30 per m is rs 7560and the cost of covering the floor with mat at rs15 per m is rs1620.find the height of the room​

Answer 1

answer:h=9.33m

step by step explanation:

for floor,

l=12m,. b=?

l×b=1620/15

=18

12×b=18

b=18/12

b=1.5m

for walls,

2(l+b)×h=7560/30

2(12+1.5)×h=252

13.5h=126

h=126/13.5

h=9.33m