Question

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Answer 1

Answer:

(9) - 63 m

(10) - 6135.8 cm²

Step-by-step explanation:

(9)

Given, height of conical tent (h) = 8m.

Given, Base = 6m.

We know that Slant height (l) = √h² + r²

⇒ √8² + 6²

⇒ 10 m.

We know that Curved surface area of conical tent = πrl

⇒ 3.14 * 6 * 10

⇒ 188.4 m²

Given, Width of tarpaulin = 3m

Now, Length of tarpaulin required to make tent = 188.4/3

⇒ 62.8 m.

Extra length of material required = 20 cm = 0.2m

Therefore, total length of tarpaulin required including margins and wastage

⇒ 62.8 + 0.2

⇒ 63 m.

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(10)

Given, radius = 7 cm.

Given, height= 27 cm.

We know that Slant height (l) = √r² + h²

⇒ √7² + 27²

⇒ √778

⇒ 27.89 cm.

Area of sheet required for the cap :

⇒ πrl

⇒ (22/7) * (7) * 27.89

⇒ 613.58 cm².

So,the sheet required for 10 caps = 6135.8 cm².

Hope this helps!

Answer 2

ANSWER 9

63 m


Answer 10


$6135.8 {cm}^{2}$



FORMULA USED


CURVED SURFACE AREA OF CONE


$\pi \: rl$






STEP BY STEP SOLUTION


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