If diameter of a circle is doubled, then

Radius will be doubled

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Radius will decrease

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Radius will remain same

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Radius will be halved

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Solution

The correct option is A Radius will be doubled
The diameter of a circle = radius $\times$ 2

So, when the diameter of a circle is doubled its radius is also doubled.

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If the height of a cylinder is doubled and radius remains the same, then volume will be

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If the height of a cylinder becomes $\frac{1}{4}$ of the original height and the radius is doubled, then which of the following will be true ?

(a) Total surface area of the cylinder will be doubled
(b) Total surface area of the cylinder will remain unchanged
(c) Total surface area of the cylinder will be halved
(d) None of the above

If the radius of a cylinder is doubled and height is halved find the change in the volume.

Question 5

If the height of a cylinder becomes $\frac{1}{4}$ of the original height and the radius is doubled, then which of the following will be true ?
(a) Volume of the cylinder will be doubled
(b) Volume of the cylinder will remain unchanged
(c) Volume of the cylinder will be halved
(d) Volume of the cylinder will be $\frac{1}{4}$ of the original volume

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If diameter of a circle is doubled, then

The correct option is A Radius will be doubledThe diameter of a circle = radius × 2 So, when the diameter of a circle is doubled its radius is also doubled.

The correct option is A Radius will be doubled
The diameter of a circle = radius $\times$ 2

So, when the diameter of a circle is doubled its radius is also doubled.