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3 years ago

Find the surface area of the following figure.

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

3 0

Answer:

Surface area is 77cm.

Step-by-step explanation:

To find the surface area, you must find the area of all shapes (surfaces) ad add them together.

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Answer:

$x=16\dfrac{28}{37}\\ \\y=5\dfrac{1}{3}\\ \\z=7.5$

Step-by-step explanation:

The diagram shows three paralel lines which divide the large triangle into three similar triangles.

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$\dfrac{5}{z}=\dfrac{y}{8}=\dfrac{2}{3}$

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$\dfrac{x}{20}=\dfrac{z+8}{z+8+3}\\ \\\dfrac{x}{20}=\dfrac{7.5+8}{7.5+8+3}\\ \\\dfrac{x}{20}=\dfrac{15.5}{18.5}\\ \\x=20\cdot \dfrac{155}{185}=20\cdot \dfrac{31}{37}=\dfrac{620}{37}=16\dfrac{28}{37}$

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Find the surface area of the following figure.​

Find the surface area of the following figure.