Question

A room is 8m long 6m wide and 3.5m high find cost of white washing its four walls at rate of Rs 50 per square meter

Answer 1

Answer:

Cost of white washing is rs 4900

Step-by-step explanation:

Given,

The room has,

Length, l = 8 m,

Width, w = 6 m,

Height, h = 3.5 m,

Thus, the area of the walls,

$A=2lh + 2wh$

$=2(8)(3.5) + 2(6)(3.5)$

$=56+42$

= 98 square meter,

Since, the rate of white washing = 50 rupees per meter,

Hence, the total cost = rate of white washing per meter × A

= 50 × 98

= 4900 rupees.

Learn more :

A room is 5.5m long, 4m wide and 3.5m high. Find the cost of papering its walls with paper 90cm wide at Rs1.20 per meter. :

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Answer 2

Answer:

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