In terms of \piπ, how much bigger is the area of a pizza with a diameter of 18 in. than the area of pizza with a diameter of 10 in.?

56л

Step-by-step explanation:

area of a pizza of 18 in=  лr²

                                         r=18/2=9

                                          area= л×9²

                                          =81л

area of a pizza of 10in=

                                      r=10/2=5

                                       area=л×5²

                                       =25л

difference=81л-25л

                =56л

c

step-by-step explanation:

c

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99