Answer:
#1 = 21.5cm radius
Step-by-step explanation:
X is 7 more than y
x>y then
difference betwen squares is 161 so
x=7+y
and
x²-y²=161
so
x=7+y
sub that for x in other equation
(7+y)²-y²=161
y²+14y+49-y²=161
14y+49=161
minus 49 both sides
14y=112
divide both sides by 14
y=8
sub back
x=7+y
x=7+8
x=15
the numbers are 15 and 8
The correct answer is 0.63 I had this question on my homework last week and had to have help but the individual that told me that this is the correct answer
V = 126 if that's what you're looking for