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abruzzese [7]
3 years ago
14

What is the diameter of a trampoline with an area of 49 square ft

Mathematics
1 answer:
Llana [10]3 years ago
7 0
Using the formula A = πr^2

49 = 3.14r^2
Divide both sides by 3.14

15.6 = r^2
Get the square root

r ≈ 4
d = r * 2

So the diameter is around 8...
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A cylinder has a volume of 175 pie cubic units and a height of seven units what's the diameter
Debora [2.8K]
Πr²h=175
πr²*7=175
Divide both sides by 7
πr²=25
Divide both sides by π (3.14)
r²=7.96
Square root of 7.96=2.82
r=2.82
Diameter is 2r. 2.82*2
2.82*2=5.64
3 0
3 years ago
For an annual membership fee of $500,Mr.Bailey can join a country club that would allow him to play a round of golf for $35. Wit
IRISSAK [1]

Answer:

25 rounds

Step-by-step explanation:

Let

x -----> the number of rounds of golf

y ---> total charges to play

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or unit rate

b is the y-intercept or initial value

<em>Membership</em>

y=35x+500 ----> equation A

The slope is  m=$35 per round

The y-intercept b=$500 (annual membership fee)

<em>Non-Membership</em>

y=55x ----> equation B

The slope is  m=$55 per round

The y-intercept b=$0

Equate equation A and equation B

55x=35x+500

solve for x

55x-35x=500

20x=500

x=25\ rounds

For x=25 rounds the cost to be the same with and without a membership

8 0
3 years ago
Read 2 more answers
10(-3n + 8) = 380 pls find n
Flauer [41]

Answer:

n = - 10

Step-by-step explanation:

10(-3n + 8) = 380

-30n + 80 = 380

80 - 380 = 30n

30n = - 300

n = - 300 : 30

n = - 10

3 0
3 years ago
Read 2 more answers
Olivia bought a beach towel for $9.95
horsena [70]

Answer:

$23.41

Step-by-step explanation:

Add the cost of each item together.

$9.95 + $13.46 = $23.41

And there may have been sales tax as well but this information was not provided so it is not needed in the answer.

8 0
3 years ago
Find the total surface area of this cuboid,<br> 5 cm<br> 4 cm<br> 6 cm
Tatiana [17]

Answer:

148

Step-by-step explanation:

Sa=2(lw+lh+wh)

Sa=2(4*5+4*6+5*6)

148=2(4*5+4*6+5*6)

3 0
3 years ago
Read 2 more answers
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