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3 years ago

A cone has a height of 20 millimeters and a radius of 8 millimeters. What is its volume?

Mathematics

2 answers:

Rzqust [24]3 years ago

8 0

Answer:

Step-by-step explanation:

volume of cone =1/3 πr²h=1/3×π×8²×20=1280/3 π mm³

=1280/3×3.14

≈1339.73 mm³

sdas [7]3 years ago

5 0

Answer:

Step-by-step explanation:

the volume of the cone:

V=3.14*r^2*(h/3)

V=3.14*8*8*(20/3)=200.96*(20/3)=1339.73

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Find the arc length and area of a sector with radius R =60 inches and central angle equals 30° round your answer to the nearest

Black_prince [1.1K]

Answer:

(a)31.42 inches

(b)942.48 Square Inches

Step-by-step explanation:

Given a sector of a circle with the following dimensions:

Radius of the circle =60 inches

Central Angle of the sector =30°

(a)Arc Length

Arc Length $=\dfrac{\theta}{360^\circ}X2\pi r$

$=\dfrac{30}{360^\circ}X2*60*\pi\\\\=10\pi\\\\=31.42$ Inches (correct to the nearest hundredth)$

(b)Area of the sector

Area of the sector $=\dfrac{\theta}{360^\circ}X\pi r^2$

$=\dfrac{30}{360^\circ}X\pi*60^2\\\\=300\pi\\\\=942.48$ Square Inches (correct to the nearest hundredth)$

3 0

3 years ago

Read 2 more answers

The sum of person x and person y is 2640. if person x's income is 20% more than person y, find person x's income.

Masja [62]

Answer:

I do not understand she question do you mean the sum of their income is 2640

if so, then the answer is 440 to be x income

Step-by-step explanation:

x income = 20% or 1/5 of y income

y income = 5 of x income

we know that the sum of their income = 2640

which means that

x + y = 2640 =

1/5y + y = 2640

6y/5 = 2640

cross multiply to give us

6y = 5(2640)

6y = 13200

divide through by 6 to give us,

6y/6 = 13200/6

y = 2200

since we know that x income is 20% y income,

therefore, x income =

20/100 * 2200

= 440

therefore,

x income = 440

y income = 2200

5 0

2 years ago

Read 2 more answers

What simple machine is this? i'll mark brainliest!

BartSMP [9]

A LEVER

Its a lever because both sides can be controlled by eachother :)

6 0

2 years ago

Read 2 more answers

Subtract: 6/2x^+8x - x/4x^+12x-16 = 6/2x(x+4) - x/4(x+4)(x-1) = 6•2(x-1)/2x(x+4)•2(x-1) - x•x/4(x+4)(x-1)•x

ss7ja [257]

Answer:

$\frac{-x^2+12x-12}{4x(x+4)(x-1)}$

Step-by-step explanation:

$\frac{6}{2x(x+4)}- \frac{x}{4(x+4)(x-1)}$

$\frac{6\cdot2(x-1)}{2x(x+4)\cdot2(x-1)}- \frac{x\cdot x}{4(x+4)(x-1)x}$

$\frac{12(x-1)}{4x(x+4)(x-1)}- \frac{x^2}{4x(x+4)(x-1)}$

$\frac{12(x-1)-x^2}{4x(x+4)(x-1)}$

$\frac{-x^2+12x-12}{4x(x+4)(x-1)}$

5 0

3 years ago

Multiply and simplify.

Anuta_ua [19.1K]

Hi, Cupcakesorinkles14 here to your aid your correct answer is
48x6 + 8x3.

3 0

3 years ago