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2 years ago

What is the surface area of a cube that has edges 3 cm long

Mathematics

2 answers:

Bezzdna [24]2 years ago

4 0

Answer:

Step-by-step explanation:

multiply 3 by 3 to get the surface area of one of the squares that make up a cube. then since a cube has 6 sides multiply the result (9) by 6 in order to get 54

dimulka [17.4K]2 years ago

3 0

Answer:

9cm^2

Step-by-step explanation:

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A, B, and C are collinear points, where B is between A and C. Find x if AB = x, BC = x + 6, and AC = 24. Then find the measures

Alekssandra [29.7K]

Answer:

AB = 9, BC = 15

Step-by-step explanation:

Since, A, B, and C are collinear points, where B is between A and C. i. e. A - B - C

$\therefore AC = AB + BC\\\therefore 24 = x + x + 6\\\therefore 24 = 2x + 6\\\therefore 24 - 6 = 2x \\\therefore 18 = 2x \\ \therefore \: \frac{18}{2} = x \\ \therefore \: x = 9$

$\therefore AC = AB + BC\\\therefore 24 = x + x + 6\\\therefore 24 = 2x + 6\\\therefore 24 - 6 = 2x \\\therefore 18 = 2x \\ \therefore \: \frac{18}{2} = x \\ \therefore \: x = 9 \\ \because \: AB = x \\ \huge \red{ \therefore AB = 9} \\ \\ \because \:BC = x + 6 \\ \therefore \: BC = 9 + 6 \\ \huge \purple{ \therefore \: BC = 15}$

8 0

3 years ago

A circle has a radius of 9 cm.

stira [4]

Radius = 9cm

So,

Area of circle = πr²

= π(9)²

= π × 81 cm²

= 81π cm²

8 0

2 years ago

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den301095 [7]

Answer:

x = 65

Step-by-step explanation:

Angles are equal because of the vertical angle thm

2x + 15 = 145

2x = 130

x = 65

7 0

3 years ago

Find the output, y, when the input, x, is 7. <br> y=__

serg [7]

Answer:

y=4

Step-by-step explanation:

Read off the graph. The corresponding y-coordinate when the x-coordinate is 7 is 4.

5 0

2 years ago

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6) 6n+ 3 = 3(-7n + 1)<br> what did you guys get for the answer?

Allushta [10]

Answer:

n=0

Step-by-step explanation:

Clear parenthesis w/ distribution:

3(-7n+1)=-21n+3

Move everything over to one side:

6n+3=-21n+3

6n=21n Subtract the 3 on the right.

-15n=0 Subtract the 21.

n=0 Divide the -15.

5 0

3 years ago

Read 2 more answers

What is the surface area of a cube that has edges 3 cm long￼

What is the surface area of a cube that has edges 3 cm long