The area of a circle is given by:

Where r is the circle's radius. In this case we have a diameter of 8cm so the radius 4cm. Using pi=3.14 we have that the area of the circle is:

So the area is 50.24 cm^2.
Answer:
5x^2+3x-3
Step-by-step explanation:
Only add common variables.
(The wierd symbol means squared)
So practically, it’s asking you to rearrange the formula to make it equal the value given:
h=A/ 1/2b
w=V/lh
b=A/h
Yes
7.539 is greater than 7.344 by 0.195
hope this helps
You could buy 15 bags of mulch with $105.
To find the answer, plug in 0 for x since you aren't buying any bags of sand and then you have 7y=105 and divide by 7 to find y which is 15.