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2 years ago

A cone has same volume with a cylinder which is 5 cm high. If they have same area of the

Mathematics

1 answer:

NISA [10]2 years ago

3 0

Answer:

Step-by-step explanation:

Remember, the formulas for the lateral surface area of a pyramid is 12pl and the total surface area is 12pl+B .

Since the base of a cone is a circle, we substitute 2πr for p and πr2 for B where r is the radius of the base of the cylinder.

So, the formula for the lateral surface area of a right cone is L.S.A=πrl , where l is the slant height of the cone.

Find the lateral surface area of a right cone if the radius is 4 cm and the slant height is 5 cm.

L.S.A=π(4)(5)=20π≈62.82 cm2

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stiks02 [169]

Answer:

5040.

Step-by-step explanation:

all you have to do is, multiply.

14 × 5 × 8 × 9

= 5040

I think the bottom number is 9.

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3 years ago

Which of the following values is the solution of x/32 = 8

jeka57 [31]

Answer:

I am unaware of the values but the answer to this would be 256 because 8*32=256 256/32=8

Step-by-step explanation:

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3 years ago

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alina1380 [7]

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3 years ago

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In △ABC,∠B is a right angle. The coordinates for each point are A(10, 7), B(5, 9), and C(3, 4). Rounded to the nearest tenth,

shepuryov [24]

Answer:

$A=14.5\ units^2$

Step-by-step explanation:

we know that

The area of the right triangle ABC is equal to

$A=\frac{1}{2}(AB)(BC)$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

A(10, 7), B(5, 9), and C(3, 4)

step 1

Find the distance AB

A(10, 7), B(5, 9)

substitute in the formula

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B(5, 9),C(3, 4)

substitute in the formula

$d=\sqrt{(4-9)^{2}+(3-5)^{2}}$

$d=\sqrt{(-5)^{2}+(-2)^{2}}$

$d_B_C=\sqrt{29}\ unjts$

step 3

Find the area

substitute the values

$A=\frac{1}{2}(\sqrt{29})(\sqrt{29})$

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