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Damm [24]
3 years ago
13

Need help with khan, again.

Mathematics
1 answer:
IrinaK [193]3 years ago
5 0

Answer:

6.28

Step-by-step explanation:

1/2 x 3.14 x 2^2 = 6.28

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a class has six boys and 14 girls what is the ratio in simplest form that compares number of boys the number of students​
-BARSIC- [3]

Answer:

3:10

Step-by-step explanation:

Boys- 6

Girls- 14

Total students- 20

Boys:Total students

   6   :      20

Simplify:

6/2=3

20/2=10

This is written as:

3:10

➴Hope this helps!

➸CloutAnswers

6 0
3 years ago
If the radius of a coin is 20cm ,find its surface area.​
jasenka [17]

Answer:

It's surface area is 1257.14cm^2

Step-by-step explanation:

area=22/7×20cm×20cm

=3.14×20cm×20cm

=1257.14cm^2

4 0
2 years ago
A rectangle Has an area of 252 yd.². The length of the rectangle is 10 yards longer than twice it’s worth. Find the width and le
Rama09 [41]

Answer:

Width = 9 yds

Length = 28 yds

Step-by-step explanation:

Width = x

Length = 2x + 10

Area is 252 yd²

x(2x + 10)  = 252

2x² + 10x - 252 = 0

2 (x + 14) (x - 9) = 0

(x + 14) (x - 9) = 0

x = - 14 or x = 9

Width = 9 yds

Length = 2x9 + 10 = 28 yds

7 0
2 years ago
Read 2 more answers
Which property does the following<br> equation represent?<br> 62? + 43 = 43+ 6x2
timurjin [86]

Answer:

commutative

Step-by-step explanation:

you are typing the same numbers but in different order

8 0
3 years ago
Write the rate as a fraction in simplest form: 492 miles in 8 hours.
Lostsunrise [7]
123 miles 2 hours

Tanks
8 0
3 years ago
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