Step-by-step explanation:
Absolute error = 300-286
=14 pounds
Percentage error = 14/286 x 100%
=4.8951
=4.9%
Right triangle, Pythagorean Theorem:
c² = a² + b²
a=8, b=9
c² = 8² + 9² = 64 + 81 = 145
c = √145 inches
That's the exact answer but they want us to ruin it with an approximation.
c ≈ 12.041594578792296 inches
Answer: 12