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nadezda [96]
3 years ago
14

If the area of the circle is 225pi what is the diameter

Mathematics
1 answer:
Stells [14]3 years ago
8 0

Answer:

30cm

Step-by-step explanation:

Area is πr²

So,

πr²=225π

r=√225

r=15cm

Diameter=2r=30

Maths is easy peasy

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12=10(s+4)+50 what is the written problem to this can you help me with the answer
muminat

Answer:

s = -7.8

Step-by-step explanation:

from the question 12=10(s+4)+50

<u>first step</u>

open the bracket and evaluate for the value of s

12=10(s+4)+50

12 = 10s + 40 + 50

12 = 10s + 90

collect or combine the like terms

12-90 = 10s

-78 = 10s

divide both side by 10

-78/10 = 10s/10

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therefor s = -7.8

8 0
3 years ago
The sum of Jessica and her father is 42. If her father is 5 times her age, find the age of Jessica
Nostrana [21]

Answer:

8 and a half

Step-by-step explanation:

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8 0
3 years ago
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The formula for the volume of a sphere is v= 4/3 m^3 what is the formula solved for r ?
Softa [21]

Answer:

            3V

r = ∛ ( ---------- )

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Step-by-step explanation:

Please, enclose the fraction 4/3 inside parentheses, to eliminate any possibility of misreading this fraction.  Also note that this formula MUST include "pi," symbolized by π.

V = (4/3) π r³  This formula does NOT include "m," which is a unit of measurement, not a variable.

Our task is to solve this formula for the radius, r.

Divide both sides by (4/3) π, to isolate r³.  This results in:

      v               (4/3) π r³

-------------   =  -----------------

  (4/3) π             (4/3) π

                     

                       V              3V

Then r³ = --------------  =  --------

                   (4/3) π           4π

and r is found by taking the cube root of the above result:

            3V

r = ∛ ( ---------- )

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4 0
3 years ago
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Alex Ar [27]

Answer:

484.84

Step-by-step explanation:

(80/16.5)x100=484.84

4 0
3 years ago
Evaluate 8+3e when e=2
larisa [96]
8+3e
8+3(2)
8+6
=14

The answer is 14
hope this helps
8 0
3 years ago
Read 2 more answers
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