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zysi [14]
3 years ago
12

Can someone help me please

Mathematics
1 answer:
Softa [21]3 years ago
6 0
A I took the test :)
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(Don’t send me a link pls just answer!) First 3 people to answer get lots of points pls do it by friday!
Natali5045456 [20]

Answer:

8835.73ft^3

Step-by-step explanation:

First:

Find area of the base circle.

Diameter is 15, so radius is 7.5

Area of the base circle is 56.25pi (use formula: A=pi(r)^2 ) (also ill convert pi into decimals only later)

next find the volume of the cylinder

height is 40 so volume = 56.25pi*40 = 2250pi

next find the volume of the dome at the top.

you know the radius is 7.5

Use volume of sphere formula below :

4 /3πr^3

=1767.15

alright now add the two bolded values

1767.15+2250pi

= 8835.73

hope this helps

7 0
3 years ago
Read 2 more answers
What is...<br> 2 = -1/5c
amid [387]
C=65

If its wrong I’m really sorry:(
5 0
2 years ago
The Eiffel Tower is 324 m tall. If a tourist is looking at it from 100 m away from the base,
romanna [79]

Answer:

80,94º

Step-by-step explanation:

What I've done is, first draw a triangle with a 90º angle and write down the height (324m) and the tourist's distance (100m).

So I calculated the tangent of the angle of the tourist.

The formula is tan=Oposite side/adjacent

tan=\frac{opposite side}{adjacent}

tan=\frac{324}{100} =3.24

And now with your calculator you press "shift" and "tan". Then introduce 3,24 and it will give you the result (80,94º).

I hope it helped.

4 0
2 years ago
A student wants to construct the inscribed circle of a triangle. What is the first step she should take?
Leviafan [203]
D) construction of the angle bisector.
So if you have a triangle that is not equilateral the perpendicular bisectors would not work so you need angle bisectors.
I have drawn a diagram
The green is the angle bisectors and the yellow the perpendicular bisectors.
You can see the problem straight away

4 0
2 years ago
Read 2 more answers
Use the interactive ruler to measure the distance from the center of dilation, C, to the image and pre-image. The distance from
inna [77]

the answer is : 4, 2, one-half.

7 0
3 years ago
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