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SVEN [57.7K]
3 years ago
13

20. The perimeter of a square is 72 in. What is its area? 72 in2 324 in2 18 in2 5,184 in2

Mathematics
1 answer:
tatuchka [14]3 years ago
6 0
To find the length of each side 72/4
Each side is 18

So area is 18 times 18= 324
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You pick a card at random.
nataly862011 [7]

Answer:

3

Step-by-step explanation:

3/10

0.33333333 1/3

0.375 3/8

0.4 2/5

3 0
2 years ago
Which is the correct answer A B C D ?
storchak [24]

Answer: c

Step-by-step explanation:

3 0
3 years ago
Somebody please help me. I cant figure this out once so ever.
WITCHER [35]

Answer:

A

Step-by-step explanation:

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7 0
3 years ago
A radio arm saw has a circular cutting blade with a diameter of 10 inches and it spins at 2000rpm if there are 12 cutting teeth
FinnZ [79.3K]

Answer:

12565.11 teeth approximately cut cross the cutting surface per seconds.

Step-by-step explanation:

Since the diameter is 10inches, the circumference of the arm saw is 10π (circumference is πd where d is diameter).

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Number of teeth on saw = 12 x 10π = 120π.

To get the number of teeth that cross the cutting surface in 2000rpm we multiple it by the total number of teeth in just one rpm.

So we have 2000 x 120π. But since we are asked to find it in revolution per seconds then 2000r/m = 2000r/60s ≈ 33.33

Therefore, we have

33.33 x 120π ≈ 12565.11 teeth

7 0
3 years ago
Can someone please teach me how to add, subtract, multiply and divide negative numbers?
dedylja [7]
If both numbers are negative u add those up and ur answer will be a negative. so number one is negative 9.
if there is more positive ur answer will be a positive. so number 2 is 13.
number is more complicated so negative 3 +4 is 1 because u have more positive and u just subtract those then 1 minus 8 equals negative 7 and negative 7 minus 7 is 0. hope this helps
3 0
3 years ago
Read 2 more answers
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