How much dose it cost to paint a cuboidal wooden box of 2m length 1cm width and 1m height at the rate of Rs 40per sqm.
Answers
Answer:
the cost of painting the wooden box is actually it's total surface area i.e. 2(lb+bh+hl)
Given :- How much does it cost to paint a cuboidal wooden paint a cuboidal wooden box of 2m length,1m width and 1m height,1m width and 1m height of the rate of rs40 per sq cm ?
1. rs 400
2. rs 800
3. rs 240
4. rs 480
Solution :-
→ surface area of cuboid = 2(lb + bh + hl)
putting values we get,
→ surface area = 2(2*1 + 1*1 + 1*2) = 2(2 + 1 + 2) = 2 * 5 = 10 m².
then,
→ Total rate of paint = Rate per m² * Total surface area = 40 * 10 = Rs.400 (option 1) (Ans.)
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