Question

a room is 8m long,6m wide 3.5m high.find the cost of white washing its four walls at the rate of 50 per square meter​

Answer 1

Answer:

2500

Step-by-step explanation:

given

l=8

b=6

h=3.5

so

area of four wall=2(l+b)h

=2(8+6)*3.5=28*3.5=98

now

are of flour of the room=l*b

=8*6=48

the cost of white washing it four wall at rate of 50 per m sq

so,

=98-48=50

hence cost of white washing it four wall

=50*50=₹2500

Answer 2

CSA of the room -2(l+b)*h
So according to this 2(8+6)*3.5
=98 sq/metre
So cost =50*98
=₹490