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tankabanditka [31]
1 year ago
9

The two bases of a right conical frustum have radii 12 and 9. The two bases are 4 units apart. Let the volume of the frustum be

$V$ cubic units and the total surface area of the frustum be $A$ square units. Find $V A$.
Mathematics
1 answer:
Len [333]1 year ago
7 0

$V A$. =21,978 cm ^3 cubic units and the total surface area of the frustum

What is frustum?

The area of a right circular cone between the base and a part parallel to the base that does not pass through the vertex is known as the frustum. The distance between the two bases perpendicular to the axis determines the altitude of a frustum on a right circular cone.

The formula for the curved surface area (CSA) of a cone's frustum is pi * l(R + r), where (r) denotes the radius of the smaller circle, (R) denotes the radius of the larger circle, and (l) is the slant height of the frustum.

A frustum of that cone is the region of the solid between the plane and the base where a right circular cone is cut by a plane parallel to its base.

Should be the height, , the slant height, and the radii of the circular bases of a frustum of a cone, then.

L S A frustum = π ( R + r ) l.

The two bases of a right conical frustum have radii 12 and 9. The two bases are 4 units apart. Let the volume of the frustum be $V$ cubic units and the total surface area of the frustum be $A$ square units.

Let r1 =12 cm, r^2 =9 cm and h=4 cm

Volume of the dustbin (frustum)=

31 ×π×h×(r 12 +r 22 +r 1 r 2)= 31 × 7

22 × 63 × (12^2 + 9^2 +12 × 9)

=66 (144 + 81 + 108) cm^3

=66 × 333 cm^3

=21,978 cm ^3

Hence, $V A$.  =21,978 cm ^3

Learn more about frustum here:

brainly.com/question/14268491

#SPJ4

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<em>y = x ÷ 2</em>

Step-by-step explanation:

We are given a table of values, which will be represented as ordered pairs (x,y) below:

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John bought candy for $4.50 per pound.He spent a total of $36.00.How many pounds of candy did he buy?
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Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or classes. If 14 adult smartphone us
emmasim [6.3K]

The probability that fewer than 4 of then use their smart phones in meetings  or classes is 0.00030243747.

Step-by-step explanation:

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For C(14,2) you will have "14 chose 2", number of ways of choosing 2 out of 14

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For C(14,1) you will have "14 chose 1", number of ways of choosing 1 out of 14

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For  C(14,0) you will have "14 chose 0", number of ways of choosing 0 out of 14

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The probability that fewer than 4 of them use their smartphones in meetings or classes will be

0.00019018714 +0.00004044841+0.000037337+ 0.00003446492=0.00030243747

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Answer:

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Length= √324

Length= 18 yd

Dimensions of the park is 18 yd by 18 yd

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