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Anshika Goyal

· started a discussion

· 1 Months ago

question is wrong (Question: 110503.0 )

how to interpret here that u r talking abt CSA or TSA ??

Question:

The diameter of two cones are one meter each. Their lateral surface area's are 198 m2 and 220 m2 then the ratio of their slant height is:

Options:
A) 7 : 9
B) 8 : 9
C) 9 : 10
D) 10 : 11
Solution:
Ans: (c) Let l1, l2 be two slant heights of two cones.

Here radius of each cone = \(\cfrac{1}{2}\) = 0.5 m

\(\cfrac{\pi\times0.5\times l_1}{\pi\times0.5\times l_2}=\cfrac{198}{220}\)

or \(\cfrac{l_1}{l_2}=\cfrac{9}{10}\)

Knowledge Expert

· commented

· 1 Months ago

Dear student
We have fixed it.

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