Question

1a.) Write an expression that represents the area of a circle with a radius of 7 units?

b.)Using your expression, solve for the area of a circle with a radius of 7 units.

Help ASAP

Answer 1

Answer:

Area= $153.86 square-units$

Step-by-step explanation:

Area of any circle can be find with the help of the formula:

                                  $\pi *r*r$

If the radius of the circle is given then its area can be find by putting 'r' in the formula.

We have given the radius of the circle= 7 units

So, the expression for the  area of the circle with radius= 7 units is:

                     Area= $\pi *7*7$

                         '$\pi$' is a constant have a fixed value of  

                                                                                 $\frac{22}{7} \\or 3.14$

So, area of the circle = $\pi *7*7$

                                         $=\pi *49\\\\=3.14*49\\\\153.86 square-units$

Area= $153.86 square-units$