Find the area of the circle. Round to the nearest tenth. Use 3.14 for π.

A.
154 inches squared

C.
172 inches squared

B.
123 inches squared

D.
162 inches squared

A. 154

Step-by-step explanation:

The formula for the area of a circle is

First find the radius by dividing the diameter by 2, which is 7

≈154

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

6.25 grams

step-by-step explanation: