Question

The length, breadth and height of room are Scm, 4cm and 3cm respectively. Find
the cost of the white washing the walls of the room and the ceiling at the rate of
Rs.8.50 per m²​

Answer 1

Answer:

Hope this helped you

Plzz Mark me brainliest

Answer 2

Answer:

l=5cm b=4cm h =3cm

C.S.A of the room including the ceiling =2(bh+hl) +lb.

= 2(4cm*3cm+3cm*5cm) +5cm*4cm.

=2(12cm^2+15cm^2) +20cm^2.

=2(27cm^2) +20cm^2.

=54cm^2+20cm^2.

=74cm^2.

Now,

Cost of white washing 1 cm square =Rs.8.50

So cost of white washing 74 cm square =8.50*74

=Rs.629