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Fed [463]
3 years ago
9

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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the first one is correct

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3 years ago
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you rent an apartment that costs $1600 per month during the first year ,but the rent is set to go up 11.5% per year.what would b
RoseWind [281]

Answer:

$4,750.

Step-by-step explanation:

To determine the rental value of the apartment in the tenth year, knowing that it is worth 1,600 during the first year but that it will be adjusted annually to 11.5%, the following calculation must be made:

X = 1,600 x (1 + 0.115) ^ 10

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Thus, at ten years, rounded to the nearest tenth, the rental value will be $ 4,750.

7 0
3 years ago
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A triangle has 2 sides that are 9 inches and the bottom is 6 inches what is the height?
Elanso [62]

The height of the isosceles triangle is 8.49 inches.

<h3>How to find the height of the triangle?</h3>

Here we have a triangle such that two of the sides measure 9 inches, and the base measures 6 inches.

So this is an isosceles triangle.

We can divide the isosceles triangle into two smaller right triangles, such that the side that measures 9 inches is the hypotenuse, the base is 3 inches, and the height of the isosceles triangle is the other cathetus.

By Pythagorean's theorem, we can write:

(9in)^2 = (3 in)^2 + h^2

Where h is the height that we are trying to find.

Solving that for h we get:

h = √( (9 in)^2 - (3in)^2) = 8.49 inches.

We conclude that the height of the isosceles triangle is 8.49 inches.

If you want to learn more about triangles:

brainly.com/question/2217700

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8 0
2 years ago
The area of a triangle is 24 square inches. What is the height of the triangle if the base length is 4 inches?
snow_tiger [21]
A = b*h*0.5
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Height is 12 inches.
7 0
3 years ago
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What is 3/5 x (times/multiply by) 3/8?
Gennadij [26K]

Answer:

9/40

Step-by-step explanation:

3/5 * 3/8

Multiply the numerators

3*3 = 9

Multiply the denominators

5*8 = 40

9/40

The fraction does not simplify

5 0
2 years ago
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