Question

A room is 9 m long, 8 m broad and 6.5 m high. it has one door of dimensions (2 m × 1.5 m) and four windows each of dimensions (1.5 m × 1 m). Find the cost price of the whitewashing the walls at ₹ 25 per m square.​

Answer 1

Answer:

hi there of 6jdjdb the headmaster prayer for the day of school madhi janar thakle to the school of the headmaster requesting him and he will be a letter of recommendation for me and my krt the school

Step-by-step explanation:

bhag gaya tha hi nahi ahi tuna salad with the headmaster of the school the day and night of the headmaster requesting him and he will be a good morning my name Komal Sharma good 5bnzh the school

Answer 2

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Given

Length of a room = 9 m

Breadth of a room = 8 m

Height of a room = 6.5 m

Area of 4 walls = 2(1 + b) h

= 2 (9 m + 8 m) x 6.5 m

= 2 x 17 m x 6.5 m

= 221 m²

Length of a door = 2 m

Breadth of a door = 1.5 m

Area of a door = Length x Breadth

= 2 m x 1.5 m = 3 m²

Length of a window = 1.5 m

Breadth of a window = 1 m

Since,

area of one window = Length x Breadth

= 1.5 m x 1 m = 1.5 m²

Thus,

Area of 3 such windows = 3 x 1.5 m²

= 4.5 m²

Area to be white washed = Area of 4 walls – (Area of one door + Area of 3 windows)

Area to be white washed

= [221 – (3 + 4.5)] m²

= (221 – 7.5) m²

= 213.5 m²

We have cost of white washing for 1 m² area = Rs. 3.80

Cost of white washing for 213.5 m² area

= Rs. (213.5 x 3.80)

= Rs. 811.30