Question

A room is rectangular in shape and has a flat roof It is 10 m wide 13 m long and 5 m high It is to be painted inside and outside and on the floor but not on the ceilling then the total area to be painted is

• A. 360 $m^2$
• B. 460 $m^2$
• C. 490 $m^2$
• D. 590 $m^2$

Answer 1

The correct option is D 590 $m^2$

Given the length , breadth and height of rectangular room is 13 m,10 m and 5 m

Then area of inner wall and outer wall and floor =$4(l\times h+b\times h)+l\times b=4(10\times 5+13\times 5)+13\times 10=460+130=590m^2$