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spayn [35]
3 years ago
6

How do you find the total surface area of a 3-D composite figure? Do you subtract one base from one of the figures or both of it

s bases?

Mathematics
1 answer:
Andrews [41]3 years ago
6 0
What does the shape look like?
Ok, so say you are calculating the surface area of the shape in the image below.
You would calculate the area of both shapes (the vertical box and the horizontal one), then subtract the area of the left face of the left rectangle (it is 10x20). That way, you are subtracting the area from the tall box. Make sure when you calculate the area of the short box that you don't include the left face (which is non-existent because it is attached to the tall box). If this is still really confusing (don't blame you if it is!!), let me know and I will walk through and example with you. Hope this helps!!

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6 and 3000 is the answer for ur question would be 3000
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(x2 - y2)-(-x2 + y2)<br> How do you write that out to show work ?! Help pleAse
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do it or he will hunt you down and kill u (lets destroy the moderators!!!!!!!!)

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Step-by-step explanation:

8 0
2 years ago
Which of the following points is a solution of the system shown? x + y ≥ 6 x ≥ 4 a.(-1, 7) b.(4, -2) c.(4, 2)
Kobotan [32]
I know none of these are actually the answer but odysseyware gave me credit for
(4,2)
8 0
3 years ago
Read 2 more answers
937 divided by 7 plz help me
attashe74 [19]
133.857142857 I’m not completely sure
7 0
3 years ago
Read 2 more answers
Can you help me with this problem please
Over [174]

Remark

I think you want us to do both 3 and 4


Three

QR is 4 points going left from the y axis + 2 points going right from the y axis.

QR = 6 units long.


RT is 4 units above the x axis and 3 units below the x axis

RT = 7 units long


TS = 3 units. For this one you just go from T to S. The graph really helps you. You just need to count.


Problem 4

You need to find the area of the combined figure. You could do it as a trapezoid, which might be the easiest way. I'll do that first.


Area = (b1 + b2)*h/2


Givens

B1 = QR = 6

B2 = UT + TS = 6 + 3 = 9

h = RT = 7


Area

Area = (6 + 9)*7/2

Area = 15 * 7 / 2

Area = 52.5


Comment

You could break this up into a rectangle + a triangle

Find the area of QRTU and add the Area of triangle RTS


<em>Area of the rectangle </em>= L * W

L = RT = 7

W = QR = 6

Area = 7 *6 = 42


<em>Area of the triangle</em> = 1/2 * B * H

B = TS = 3

H = RT =7

Area = 1/2 * 3 * 7

Area = 1/2 * 21

Area = 10.5


Total Area = 42 + 10.5 = 52.5 Both answers agree.

3 0
3 years ago
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