Question

find the volume of wood Rekha required to make a top open box of dimension 15 centimetre by 12 CM by its length and thickness of what is meant centimetre

Answer 1

Answer:

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Answer 2

Answer:

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find the volume of wood Rekha required to make a top open box of dimension 15 centimetre by 12 CM by its length and thickness of what is meant centimetre

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Given, Radius of cylindrical container =6cm

Given, Radius of cylindrical container =6cmHeight of cylindrical container =15cm

Given, Radius of cylindrical container =6cmHeight of cylindrical container =15cmVolume of cylinder ⤵️

$\pi {r}^{2}h$

$\pi \times 36 \times 15$

$540\pi {cm}^{3}$

Now,as it is divided among 10 children

Therefore;Dividing value by 10 ⬇️⬇️⬇️⬇️⬇️

$\frac{540}{10} = 54 \pi {cm}^{3}$

Volume of cone+Volume of hemispherical top = Volume of ice cream in it .

$\frac{1}{3}\pi {r}^{2}h + \frac{2}{3} \pi {r}^{3} = \pi {r}^{2}h$

$\frac{1}{3}\pi {r}^{2}(4r) + \frac{2}{3}\pi {r}^{3} = 54\pi$

$\frac{1}{3}\pi {r}^{3}(4 + 2) = 54\pi$

$2 \pi = 54 = r = 3$

Hence,The radius of ice cream cone = 3cm