Algebra 2 Glencoe CCSS Edition page 17 problem 68

Question

The formula for the area A of a circle with diameter d is A = π (d/2)^2. Write an expression to represent the area of the circle.

Answer 1

Step:1

Area of circle is .

                          (Substitute diameter (d) = x + 3)

                          ()

                          (Evaluate power: )

Step:2

           (Using the formula )

            (Evaluate power: )

                  (Multiply: )

                   (Commutative property: a + b = b + a)

Solution:

Area of the circle .