80p=pr^2+p(2r)^2
80p=pr^2+4pr^2
80=r^2+4r^2
80=5r^2
16=r^2
r=4 for the smaller circle´s radius, and 8 is the larger circle´s radius.
Have a nice day, I hope this was helpful :D
answer:
set 4
Step-by-step explanation:
because when you divide the numbers 12,16 and 20 by 2 you'll get 6,8 and 10 which is a Pythagoras family....and it will form a right angle triangle
Answer:
-10
Step-by-step explanation:
-1+3= -2
-2 times -5= -10
3 times -1= -3
-3 -7=-10
Answer: 37
Step-by-step explanation:
Answer:
0.72
Step-by-step explanation:
7.25+2.35=9.6
9.6÷100=0.096
0.096×7.5=0.72 the tax
