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- A cistern 6 m long and 4 m wide contains water up to a breadth of 1 m 25 cm.
Question 1:
A cistern 6 m long and 4 m wide contains water up to a breadth of 1 m 25 cm. Find the total area of the wet surface.
A. 42 m sqaure
B. 49 m sqaure
Feedback Area of the wet surface =
2[lb+bh+hl] - lb = 2 [bh+hl] + lb
= 2[(4*1.25+6*1.25)]+6*4 = 49 m square
2[lb+bh+hl] - lb = 2 [bh+hl] + lb
= 2[(4*1.25+6*1.25)]+6*4 = 49 m square
C. 52 m sqaure
D. 64 m sqaure
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