So first we need to find the area of both using a=3.14*radius*radius
to find the radius we need to divide 35 by 2 (large) and 30 by 2 (medium)
lets do the large first since the raidus is 17.5 we put it into a=3.14*17.5*17.5
and then we get 961.63, for the medium we do a=3.14*15*15 which is 706.50
now for the large 961.63 * 2 is 1923.26 and the price is 19.99
for the medium we do 706.50 * 3 which is 2119.5 and costs 24.99
So the medium pizzas are a better deal
The delivery man can carry about 14 boxes of books
1/5
1/10 / 1/2= 2/10
Then simplify it by 2, it becomes D.1/5
Simple, finding markdown, use these two formulas.
Markdown=Original-New
and
Percent Markdown= Markdown Amount/Original*100
So,
Markdown=612-450
M=162
Markdown%= 162/612*100
M%=0.2647*100
M%=26.5 (rounded)
Thus, there was a 26.5% decrease.
