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3 years ago

Find the surface area of a cube with side length 8.5 cm.

Mathematics

2 answers:

EastWind [94]3 years ago

7 0

<h3>Answer: 433.5 square cm</h3>

=========================================================

Explanation:

A cube has 6 identical faces, all of which are squares.

Each square has a side length of 8.5 cm, so its area is (8.5)^2 = 72.25 sq cm.

The overall surface area, aka the area of all 6 faces combined, is 6*72.25 = 433.5 square cm

Bas_tet [7]3 years ago

4 0

Answer:

A=433.5cm²

Step-by-step explanation:

A=6a2=6·8.52=433.5cm²

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lorasvet [3.4K]

5x-7
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3 years ago

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Answer:

$\sf (x+2)^2+(y-2)^2=2$

Step-by-step explanation:

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$\sf =\left(\dfrac{-1-(-3)}{2}+(-3),\dfrac{3-1}{2}+1 \right)$

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Substituting found center (-2, 2) into the equation of a circle:

$\sf \implies (x-(-2))^2+(y-2)^2=r^2$

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$\sf \implies (-3+2)^2+(1-2)^2=r^2$

$\sf \implies 1+1=r^2$

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$\sf (x+2)^2+(y-2)^2=2$

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