If you have a circle with an area of approximately 45 square feet, what is a good estimation for the radius of the circle?
Step 1: What is the formula for finding the area of a circle? _
Step 2: What would be the first step in solving for the radius? _
Step 3: What would be the second step in solving for the radius? _
Step 4: The approximate radius would be about _
Word Bank:
3.8 feet
C=2_(\pi r)
Multiply by π on each side of the equation
Multiply by 2 on each side of the equation
Divide by 2 on each side of the equation
A = πr^(2)
2.1 feet
Divide by π on each side of the equation
205 feet
Subtract π from each side of the equation
A=2πr^(3)
square each side of the equation
7.16 feet
Take the square foot of each side of the equation
Step 1: What is the formula for finding the area of a circle? A = πr^2
Step 2: What would be the first step in solving for the radius? Divide by π on each side of the equation
Step 3: What would be the second step in solving for the radius? Take the square root of each side of the equation
Step 4: The approximate radius would be about 3.8 feet