Solve the following.
1 ) The dimensions of a room are length = 5m, breadth = 3.5m and height = 2 5 m. Find the
cost of painting the four walls at the rate of 725 per m square
2) A family of 20 had enough food to last them for 30 days. If 5 guests arrive suddenly. For
how long will the amount of food last?
3) Find the cube root of 46.656.
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I will mark as brainliest
step by step explanation pls
Answers
Step-by-step explanation:
1)
l.s.a = 2(lb + bh + lh)
= 2[(5×3.5) + (3.5×2.5) + (5×2.5)]
=2( 17.5 + 8.75 + 12.5)
=2×38.75
= 77.5m²
cost of painting = 1m² ---->---- 725
77.5m² ----->--- ?
77.5 × 725 = 56187.5₹
2)
20 members ------>------ 30 days
20+5 members-----------y days
They are inversely propotional.
20 × 30 = 25 × y
y = (20 × 30 )/25
=24 days
3) 3.6
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