There are 5376 squares on all of the chessboards because 84 x 64= 5376
The radius, i think, I'm not 100% sure what you're asking
Since decimal form of 10% is 0.1 and 10% of x is 20,
0.1x = 20
x = 200
Since x = 200, 23% of x is:
(0.23)(200) = 46
The correct answer is 46.
Anything else to the problem?
Answer:
The equation to represent Sam's age is 15 ÷ 5 = s
s = 3