All categories

3 years ago

The area of the face of a cube is 9 square meters. what is the volume of the cuber

Mathematics

1 answer:

Helga [31]3 years ago

6 0

Answer:

Step-by-step explanation:

We know: All faces of a cube are squares.

The formula of an area of a square with a side s:

A = s²

We have A = 9m²

Substitute:

s² = 9 → s = √9 = 3 m.

The formula of a volume of a cube with an edge s:

V = s³

Substitute:

V = 3³ = 27 m³

You might be interested in

If CDE ~ GDF, find ED

qaws [65]

Answer:

Step-by-step explanation:

$\triangle CDE \sim \triangle GDF.. (given) \\\\\therefore \frac{CD}{GD} =\frac{DE}{DF}.. (csst) \\\\\therefore \frac{15}{x+3} =\frac{3x+1}{4}\\\\ \therefore \: 15 \times 4 = (x + 3)(3x + 1) \\ \\ \therefore \: 60 = 3 {x}^{2} + x + 9x + 3 \\ \\ \therefore 3 {x}^{2} + 10x + 3 - 60 = 0 \\ \therefore 3 {x}^{2} + 10x - 57 = 0 \\ \therefore 3 {x}^{2} + 19x - 9x - 57 = 0 \\ \therefore \: x(3x + 19) - 3(3x + 19) = 0 \\\therefore \: (3x + 19)(x - 3) = 0 \\ \therefore \: 3x + 19 = 0 \: \: or \: \: x - 3 = 0 \\ \therefore \: x = - \frac{19}{3} \: \: or \: \: x = 3 \\ \because \: x \: can \: not \: be \: - ve \\ \therefore \: x = 3 \\ ED = 3x + 1 = 3 \times 3 + 1 \\ \huge \red{ \boxed{ ED= 10}}$

7 0

3 years ago

-2 (3a – 2) = 1/3(7 – 3a)

ahrayia [7]

Answer:

i have no idea. But i will answer because i'm still learning.

Step-by-step explanation:

-2 (3a – 2) = 1/3(7 – 3a)

is whats the question

ok its i'm guessing -2 (3a – 2) = 1/3(7 – 3a)

-2.15384615385

Hope this helps ;)

7 0

3 years ago

Y=3x 2y-5x=4 I need the work and answer for it

telo118 [61]

U plug in the y
2 (3x) -5x=4
simplify
6x -5x =4
solve
x=4
so now you know x=4 so plug that in for x
y= 3(4)
y=12
check your answer
2(12)-5(4)=4
solve
24-20=4
4=4
so you now you got the answer right !

hope that helps!

3 0

3 years ago

Connor earned $85 at his job when he worked for 10 hours. What was his hourly pay rate in dollars per hour?

Rus_ich [418]

Answer:

8.5$

Step-by-step explanation:

85 diveded by 10 is 8.5$.

3 0

3 years ago

Read 2 more answers

Dexter has four different coins in his pocket. He randomly selects a coin from his pocket, replaces it, and selects another coin

skad [1K]

Answer:

Step-by-step explanation:

So what is the probability of the selecting the first coin? There are total of 4 different coins, so the probability of getting a dime is 1 out of 4, then he replace it, then again the probability stays the same, he still has 1 out 4 chance of getting a dime. So then it's just 1/4*1/4=1/16 :)

4 0

3 years ago