ICSE Class 9 Answered
A cistern 6m long ,4mwide, contains water to a depth of 1m 25m , find the area of the wet surface.
Asked by sonukushgzp | 19 Aug, 2019, 11:12: AM
Expert Answer
Let l and b be the length and breadth.
l = 6 m
b = 4 m
b = 4 m
Using the formula ,
Area of the wet surface,
= [2(lb + bh + lh) - lb]
= 2(bh + lh) + lb
= [2 (4 x 1.25 + 6 x 1.25) + 6 x 4]
= 49m2.
Area of the wet surface,
= [2(lb + bh + lh) - lb]
= 2(bh + lh) + lb
= [2 (4 x 1.25 + 6 x 1.25) + 6 x 4]
= 49m2.
Answered by Sneha shidid | 19 Aug, 2019, 01:29: PM
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