The length,breadth and height of a room are 5m, 4m and 3m respectively Find the cost of white washing - Maths - Mensuration

Question

The length,breadth and height of a room are 5m, 4m and 3m
respectively Find the cost of white washing the inner of the room
and ceiling at the rate of Rs 50 per square metre

Sriashika Addala · Accepted Answer

Given,
length of a room = 5m
breadth of the room = 4m
height of the room = 3m
Therefore, Area of four walls = 2h ( l + b )
= 2 * 3 ( 4m + 5m )
= 6 ( 9 )
= 54 Sq m
Area of ceiling = lb [ beacause the ceiling is in rectangular
shape ]
= 5m * 4m
= 20 Sqm
So, Total area = area of four walls + area of ceiling
= 54 Sqm + 20 Sqm
= 74 Sqm
Cost of white-washing 1 Sqm = Rs 50
Cost of white washing 74 Sqm = Rs 50 * 74 Sqm
= Rs 3700 /-

The length,breadth and height of a room are 5m, 4m and 3m respectively. Find the cost of white washing the inner of the room and ceiling at the rate of Rs 50 per square metre.