Solving for a variable in an equation means, we are changing the subject of formula of the equation.
The equation of r is: 
The equation is given as:

We start by multiplying both sides by 3

Rewrite as:

Divide both sides by 

Cancel out common factors

Take square roots of both sides

Evaluate the right-hand sides

Make r the subject

Hence, the resulting equating for r is:

Read more about the subject of formulas at:
brainly.com/question/21866313
yes because it has equal sides
Answer:
x=5.657 y=5.657
Step-by-step explanation:
Answer: the answer is d
Step-by-step explanation: if the sign is like this > the arrow moves to the right and if its like < its to the left.
if the circle on the 11 is bold that means theres a line under > if theres no bold that means there's no line under the >.
the line means less than or equal too
goodluck :)
Answer:
524cm^2
Step-by-step explanation:
Formula for Volume of sphere= 4/3 πr^2
We have,
r=5cm
Now,
Volume(v)=4/3 πr^2 = 4/3π 5^3= 4/3π 125 = 166.666666667π = 523.598775599
Rounding to the nearest tenth,
Volume=524cm^2