Question

ans me 2nd que PLZZ fast​

Answer 1

Answer:

CSA 2h(l+b)

2*3 (5+4)

6*9

54+ ceeling

54+ 5*4

54 + 20 ( star means multiply)

74m square

Answer 2

Answer:

Rs. 555

Step-by-step explanation:

Lenght of Room: 5m

Breadth of Room: 4m

Height of Room: 3m

Curved Surface Area of Room: 2h(l+b) unit

Curved Surface Area of Room (with ceiling):

2h(l+b) + lb

→2×3×(5+4) + (5×4)

→6×9 + 20

→54 × 20

→74 sq.m.

Rate of cost if white washing per sq.m.:Rs. 7.50

Cost of White washing the Room: 7.50×74

→ Rs. 555

Hence, cost of White washing the room is Rs. 555.

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