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Helga [31]
2 years ago
6

Helppp pleaseeeeeeeee

Mathematics
2 answers:
stellarik [79]2 years ago
4 0

Answer:

Step-by-step explanation:

I wish I could help you but I’m only in elementary

Neporo4naja [7]2 years ago
3 0

Answer:

Surface Area = 530yd^2

Step-by-step explanation:

<em>*This answer is for the problem on the left that seems unanswered*</em>

Firstly, you must understand that the <u>surface area</u> of an irregular polygon like the one in the problem must be found by dividing its faces into rectangles and finding the sum of the areas of those rectangles.

<em>Another way to say this is that the surface areas of these solids can be found by adding up the areas of the rectangles that make their faces.</em>

You will see that I attached a picture that divides the solid's faces into subsections, labelled <u>a through i</u>, including faces that are <em>not visible in the diagram</em>.

If you divided the solid's faces in the same way as the picture, the surface area is found as follows:

Area_A=12*7=84yd^2\\Area_B=12*4=48yd^2\\Area_C=12*4=48yd^2\\Area_D=4*4=16yd^2\\Area_E=11*3=33yd^2\\Area_F=12*3=36yd^2\\Area_G(notVisible)=12*11=132yd^2\\Area_H(notVisible)=12*7=84yd^2\\Area_I(notVisible)=Area_E+Area_D=33+16=49yd^2

<em>By the way, </em>yd^{2} is the same as "square yards".

After finding the areas of each rectangle, add them all up to get your final answer:

SurfaceArea=530yd^2

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jarptica [38.1K]

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Step-by-step explanation:

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I am Lyosha [343]
So hmm notice the picture below

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those rectangles are 0.39 radian long, since if you split π/2 in 4 pieces, you get around that much, the last rectangle there is a bit smaller than 0.39.... but they don't have to be 4 rectangles of equal length

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7 0
3 years ago
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siniylev [52]

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