of the tent put up exactly for persons.
11. The external diameter of a conical-coronet made off thermocolis 21 cm in length. To
wrap up the outer surface of the coronet with foil, the expenditure will be 57.75 at the
rate of 10p.percm'. Let us write by calculating, the height and slant height of the coronet.
favhatic in the
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Answer:
the following graph represents the polynomial y=p. write the number of zeros
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Answer:
External diameter of coronet = 21 cm
∴ external radius of coronet, r = 21/2 = 10.5 cm
Let, slant height = l cm
Height = h cm
According to problem,
⇒πrl = 57.75/0.1 [10p. = Rs. 0.1]
⇒ 22/7 × 10.5 × l = 577.5
⇒ l = 577.5 × 7/(22 × 10.5)
⇒ l = 17.5
∴ slant height = 17.5 cm
∴ height = √(17.52 – 10.52) = √(306.25 – 110.25) = 14 cm
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