For positive integers x and y, x+y=21. What is the smallest possible
value of xy?

The largest value is when x and y are almost equal: 10*11

The smallest value is when they are as different as possible: 1*20

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )

13.46

step-by-step explanation:

16.80 x .20 = 13.46