Question

Solve the problem fast ​

Answer 1

Answer:

Rs.2278.4

Explanation:

The dimensions of the room are 9 m × 8 m × 6.5 m .

Dimensions of the door = 2 m × 1.5 m

Dimensions of the windows = 1.5 m × 1 m

Surface area of the room = 2 lw + 2wh + 2lh

= 2 × 9 × 8 + 2 × 8 × 6.5 + 2 × 9 × 6.5

= 365 Sq.m

Area of a door = 2 × 1.5 = 3 Sq. m

Area of two windows = 2 ( 1.5 × 1 ) = 3 Sq. m

Area to be white washed = 365 - 3 - 3 = 356 Sq. m

Cost = 356 × 6.4

= Rs. 2278.4

So the cost for white washing is Rs.2278.4

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Answer 2

Answer:

total surface area =2[(lb)+(bh)+(hl)]

=2[9×8+8×6.5+6.5×9]

=2(72+52+58.5)

=2×182.5

=365m²

TSA-(two windows+one door)

area of the door=2×1.5

=3m²

area of two windows=2×1.5×1

=3m²

365-(3+3)

=365-6

=359m²

we have to exclude floor also. Because we don't paint floor.

359-(9×8)

=359-72

=287m²

cost of painting per my=6.4 RS

cost of painting for 287m²=6.4×287

=1836.8 Rs

Explanation:

hope it works................™