Math, asked by cherry1551, 11 months ago

A hall is 22 m long, 14 m broad and 8 m high. It has four doors each 2.6 m by 1.5 m and four windows each 1.5 m by 1 m. Find the cost of papering the walls with 80 cm wide paper at 70 paise per m.​

Answers

Answered by anuham97
3

Answer:

Rs. 819.28.

Step-by-step explanation:

L=22m, B=14m, H=8m

Dorr: l=2.6m,h=1.5m

window: l=1.5m,h=1m

Area of doors=4(l×h)

=4(2.6×1.5)

=15.6m

2

Area of windows=4(l×h)

=4(1.5×1)

=6m

2

TSA of room

=2(LB+BW+HL)

=2[22×14+14×8+8×22]

=2[308+112+176]

=1192m

2

Remaining area =1192−(15.6+6)

=1192−21.6

=1170.4m

2

Cost of papering=70 paise/m

=

100

70

Rs. .m

Cost of papering the room

=1170.4×

10

7

=Rs. 819.28.

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