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Lana71 [14]
3 years ago
12

A come and a pyramid has equal heights and volumes.if the base area of the pyramid is 154cm2.find the radius of the cone.

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0

Answer:

Radius = 8.575 cm

Step-by-step explanation:

Formula for volume of a pyramid is;

V_p = ½Ah

Where A is area of base and h is height

Also, formula for volume of cone is given as;

V_c = ⅓πr²h

Now, we are told that V_p = V_c and that h is the same for both shapes.

Thus ;

½Ah = ⅓πr²h

h will cancel out to give;

½A = ⅓πr²

Cross multiply to give;

3A/2π = r²

Base area of pyramid is given as 154 cm². Thus;

(3 × 154)/2π = r²

r = √((3 × 154)/2π

r = 8.575 cm

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3 years ago
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Answer:the number of gallons of water left in the tub after it has drained for x minutes is 300 - 8x

Step-by-step explanation:

A hot tub that holds 300 gallons of water drains at a rate of 8 gallons.

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3 years ago
An angle whose measure is degree134° is bisected. What is the measure of each of the two new angles?
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Answer:

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Angie's Bake Shop makes birthday chocolate chip cookies that cost $3 each. Angie expects that 10% of the cookies will crack and
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Answer:

Cost of selling price = $5.33 (Approx)

Step-by-step explanation:

Given:

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4 years ago
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