Jill is trying to find the area of football field with the track around it at her high school. it is composed of a rectangular middle with a semicircle on each end. the rectangular field has length 130 feet and width 50 feet. what is the area of the whole thing?
a) 6500 + 625π ft2
b) 6500 + 2500π ft2
c) 6500 + 5000π ft2
d) 7125π ft2

Step-by-step explanation:

Refer the attached figure

Area of rectangle = Length * Breadth

So, area of rectangle ABCD : 130*50

                                              : 6500 square feet .

Now two semicircles are on the widths of the rectangular field .

So, diameter of the semicircles on the ends of the rectangular field = 50 feet

So, radius = diameter /2 = 50/2 = 25

Formula of area of circle =

Area of 2 semicircles =

                                   =

                                   =

So, the total area of the field = 6500 square feet + 625π square feet

                                               =

Hence  the area of the whole thing

step-by-step explanation:

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.