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Yuliya22 [10]
3 years ago
7

What is the surface area of a cube that has a side length of 8 mm?

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer:

384 sq mm

Step-by-step explanation:

Formula : 3.84×10-4

nikklg [1K]3 years ago
6 0
Surface area of a cube = 6l²

Now given length = l = 8 mm

= 6*8² = 6*64 = 384 mm².

Thank you !!
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The back of Dante's property is a creek. Dante would like to enclose a rectangular area, using the creek as one side and fencing
Allushta [10]

The correct value is 720 ft of fencing.

Answer:

Max Area = 64800 sq.ft

Step-by-step explanation:

A square will always give us the maximum area.

Thus, one side would be;

720/4 = 180 feet

So, we want a square 180 ft by 180 ft

however, from the question, we are to use the creek as one side. So, we'll take the 180 ft that we don't need because of the creek and then add it to the opposite side to get 180 + 180 = 360 ft.

Thus,we now have a rectangle with dimensions: 180 ft by 360 ft

Area is given by;

area = length × width

Maximum Area = 180 × 360

Max Area = 64800 sq.ft

6 0
4 years ago
Audrey has 32 dimes and quarters in her piggy bank with a total value of $6.50. how many of the coins are dimes and how many are
fgiga [73]
D + q = 32....d = 32 - q
0.10d + 0.25q = 6.50

0.10(32 - q) + 0.25q = 6.50
3.20 - 0.10q + 0.25q = 6.50
-0.10q + 0.25q = 6.50 - 3.20
0.15q = 3.30
q = 3.30 / 0.15
q = 22 <===  22 quarters

d + q = 32
d + 22= 32
d = 32 - 22
d = 10 <=== 10 dimes
7 0
3 years ago
Simplify 8/-3 ÷ -4/9<br><br> A. -8<br> B. -6<br> C. 6<br> D. 8
geniusboy [140]

Answer:

C. 6

Step-by-step explanation:

to divide by a fraction multiply by the recirpocal of that fraction.

8/3 ÷ 9/4

reduce the numbers with GCF 4 which equals 2/3 x 9

reduce the numbers with GCF 3 which equals 2x3= 6

4 0
3 years ago
In need of help with this question .
Andreyy89
I wish I could help you but get got it the answers are more correct and accurate
3 0
3 years ago
State of the number 49/9 (square root) is a rational or irrational
lina2011 [118]
Hey there!!

49/9 = 7
is a rational number as it has a definite answer 7.

Hope it helps you.
5 0
3 years ago
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