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manjeet

· started a discussion

· 1 Months ago

for painting curved surface area should be used???? (Question: 274663.0 )

why used total surface area.....????

Question:

Let ABCDEF is a prism whose base is a right angled triangle, whose sides adjacent to 90° are 9 cm and 12 cm. If the cost of painting the prism is Rs.151.20, at the rate of 20 paise per sq.cm, then the height of the prism is —

Options:
A)

15 cm

B)

16 cm

C)

17 cm

D)

18 cm

Solution:

Ans: (d)

  

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