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"What is the number of surfaces of a right circular cylinder.\nA cube and a sphere are of the same height. Find the ratio of their volume.\nFind the total surface area of a cone whose radius is \\( r / 2 \\) and slant height is \\( 2 x \\)\nFind the retion of the lateral surface area and total surface area of a cube."

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Q1

The base radius and height of a cube are

7 c m

and

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Q2

Find the total surface area of a cone whose radius is $\frac{r}{2}$ and slant height is $2 l .$

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Q3

The total surface area of a cone whose radius is $\frac{r}{2}$ and slant height 2 $l$ is:

[1 Mark]
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Q4

Mark the correct answer.

Assertion(A): The total surface area of a cone whose radius is

\frac{r}{2}

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(l + \frac{r}{4})

Reason(R): Total surface area of cone is πr(l+r) where r is radius and l is the slant height of the cone.

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Q5

Radius and slant height of a solid right circular cone are in the ratio

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