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Aloiza [94]
2 years ago
12

A hollow ball is made of rubber that is 2 centimeter thick. The ball has a diameter of 20 centimeters at the outside surface.

Mathematics
1 answer:
MissTica2 years ago
8 0

Answer:

628.57CM²

Step-by-step explanation:

20/2=10

VOLUME OF CYLINDER=PIR^2H

22/7*10*10*2=628.57

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molly is painting a model house and needs to know how much paint she will need. she knows the surface area of the prism is 216 s
Andrej [43]

Answer:

Part 1) The surface that is shared by the two solids is the top of the cube that is the same that the square base of the pyramid.

Part 2) The dimensions of this surface are 6 in x 6 in.

Part 3) Molly needs to paint 228 square inches.

Step-by-step explanation:

Part 1) Which surface is shared by the two solids?

we know that The surface that is shared by the two solids is the top of the cube that is the same that the square base of the pyramid

Part 2)  What are the dimensions of this surface?

The surface is a square with side length 6 inches so The dimensions of this surface are 6 in x 6 in

Part 3) what is the area molly needs to paint?

we know that The area that Molly needs to paint is equal to the surface area of the cube plus the surface area of the pyramid minus two times the area of the surface that is shared by the two solids so therefore, Molly needs to paint 228 square inches

8 0
3 years ago
Solve this system of equations by converting the equations into slope-intercept form. How many solutions does this system have?
Alex777 [14]
<h3>Answer: -3x-3y=-30= x=−y+10  </h3><h3>x+y+10= x=−y+10</h3>

8 0
2 years ago
The volume of the plastic cylinder is 64. A glass cylinder has the same height and radius is half of the plastic cylinder radius
sp2606 [1]

Answer:

I am not sure if I'm correct, but I got 16

Step-by-step explanation:

lets look at the formula for cylinder volume:

V=π*r^(2)*h

now, lets plug in 64

64=π*r^(2)*h

h=64/(π*r^(2))

Volume of glass cylinder is

V=((0.5r)^2)*(64/(π*r^(2)))*π

V=0.25π*r^(2)*(64/(π*r^(2)))

V=16π*r^(2)/(π*r^(2)

V=16

8 0
3 years ago
I am child in the family
uranmaximum [27]

Answer:

why this question ?!

giving points?!

5 0
2 years ago
Read 2 more answers
What is one way to find the number of liters in 8 kiloliters?
zhuklara [117]

Answer:

8000 liters

Step-by-step explanation:

There are 1000 liters in a kiloliter, so you would multiply both sides by 8.

7 0
3 years ago
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