Question

the length breadth and height of a hall are 5m,6m and 7m respectively. the hall has one door of area 1m ×0.5m. Find the cost of painting the walls (only the walls) at the rate of ₹90 per square metre​

Answer 1

Answer:

area of hall = l×b×h

= 5m×6m×7m

=210m3

area of door=0.5m

area of walls = area of total hall - area of

door

= 210- 0.5

=209.5

Answer 2

Step-by-step explanation:

L of wall=5m

b of wall=6m

A of wall=l×b

=5×6

=30m sq.

A of door=1×0.5=0.5

A of only wall to paint=30m-0.5m=29.5m

rate=90rs per square m

29.5×90

=965.5m