What's the radius of a circle with an area of 123 square feet?

The radius of a circle with an area of 123 square feet is 6.2571 feet .

Step-by-step explanation:

Hi, to answer this question we have to use the formula for the area of a circle.

Area: π r²

Where "r" is the radius of the circle.

For this case, we have the value of the area:

123 ft² = π r²

So, we have to isolate "r"

123 / π= r²

39.152116 = r²

√39.152116= r

6.2571 ≅ r

Feel free to ask for more if it´s necessary or if you did not understand something.

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or