Q.9 The bottom of a tank
measures 20m x 10m. Find its
depth if it contains 200m3
water. *
Answers
Answered by
1
Answer:
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Answered by
2
Answer:
༺☞The tank is a cuboid open at the top.
Surface area of a cuboid = 2(lb + bh + hl)
Surface area of a tank open at top = Surface area of cuboid - Area of the portion open at the top i.e.
2(lb + bh + hl) - lb = 2 (10*5 + 5*3 + 3*10) - 10*5
2(50+15+30) - 50 = 2*95 - 50 = 190 -50 = 140m sq.꧂
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