Find the cost of painting the 4 walls of a room having length 12m
breadth 10m and height 8m at the rate of 35 per m²
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1 thought on “Find the cost of painting the 4 walls of a room having length 12m<br />breadth 10m and height 8m at the rate of 35 per m²<br />​”

1. Answer:

   Step-by-step explanation:

   Given Length of the room = 6m

   Given Breadth of the room = 4m

   Given Height of the room = 2.5m

   As the room is in a cuboidal shape therefore to find the cost of painting the walls at ₹25 per sq. m, We first need to find out the Area of four walls of the room

   Lateral Surface area of Cuboid = Area of four walls of the room

   Therefore, Lateral surface area or Area of four walls = 2(l + b)h

   where, l is the length, b is the breadth and h is the height of the room

   put the given values of l,b and h in the formula.

   => 2(6 + 4)2.5

   => 2 × 10 × 2.5

   => 20 × 2.5

   => 50 sq. m

   Now, Cost of painting 1 sq. m = ₹25

   Cost of painting 50 sq. m = 25 × 50 = ₹ 1250

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