A room is 21 dm long, 14 dm broad and 12 dm high. It has 2 doors each 8 dm × 4 \(\frac{1}{2}\) dm and 3 windows each 6 dm × 3.5 dm. The cost of whitewashing the walls at 5 paise per sq. decimetre is Options: A . &nbspRs 35 B . &nbspRs 40 C . &nbspRs 45 D . &nbspnone of these

A room is 21 dm long, 14 dm broad and 12 dm high. It has 2 doors each 8 dm &t

Question

A room is 21 dm long, 14 dm broad and 12 dm high. It has 2 doors each 8 dm ×4 \(\frac{1}{2}\)dm and 3 windows each 6 dm × 3.5 dm. The cost of whitewashing the walls at 5 paise per sq. decimetre is

Options:

A . Rs 35

B . Rs 40

C . Rs 45

D . none of these

Answer: Option D

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