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Surface area of a frustum

Total surface...

Question

Total surface area of frustum of cone
= $π l (r_{1} + r_{2}) + π {r_{1}}^{2} + π {r_{2}}^{2}$

A

False

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B

True

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Solution

The correct option is B True

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Similar questions

Q. Consider a frustum of cone with larger and smaller radius equal to

r_{1} a n d r_{2}

, respectively. Then, the total surface area of frustum of a cone is

π l (r_{1} + r_{2}) + π (r_{1}^{2} + r_{2}^{2})

. if correct enter 1 else enter 0

Q. The radii of the ends of a frustum of a cone of slant height

l

r_{1}

r_{2}

. The curved surface area of the frustum of the cone is

Q. Calculate the total surface area of frustum cone given below:

Q. Question 7
The curved surface area of a frustum of a cone is

π (r_{1} + r_{2}) l

l = \sqrt{h^{2} + (r_{1} + r_{2})^{2}}

r_{1} a n d r_{2}

are the radii of the two ends of the frustum and h is the vertical height.

Q. What is the formula for the lateral surface area of the given frustum:

R_{1}

= radius of the base

L

= length of lateral side of the bigger cone of which the frustum is a part

R_{2}

= radius of the top surface

l

= length of lateral height of cone - lateral height the frustum (s)

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Surface area of a frustum

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