They are not the same but very close, the reasoning for this is that theoretical things are not 100% accurate therefore meaning that the answers with a real experiment may vary.
Answer:
x = 8 cm
Step-by-step explanation:
Using the Pythagorean theorem:
x² = 10² - 6² = 100 - 36 = 64
x = √64 = 8
1st one: 8x+1
2nd one:5m+4
Answer:
C
Step-by-step explanation:
Area of circle = 
15/2 = 7.5
7.5 = radius
Plug 7.5 into the formula:
= 176.71
Closest answer to 176.71 = 176.625
Answer would be C.