Pls help! Do it as the instructions say and I’ll give you Brainliest!

(9)7.1

(10) 17.9

(11) 7.8

(12) 137.1

(13) 7.41

(14) $5.95

(15) 24.83

(16) Seven plus 8 is 15, carey the one. 3 plus 4 is 7 plus 1 is 8. 85

(17) 4.15-1.29= 2.86 2.86+1.29=4.15

(18) 13.78-5.41= 8.37 8.37+5.41= 13.78

(19) 8.3-4.7= 3.6 3.6+4.7=8.3

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

: )

600,000,000,000, or 6e14

step-by-step explanation: