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JulsSmile [24]
3 years ago
8

Find the length of the side f .

Mathematics
2 answers:
Charra [1.4K]3 years ago
6 0
The length of side "f" would be about 9.95.

Using Pythagorean Theorem, you have the hypotenuse or side "c" (18) which is longest side. You also have side "b" (15).
Since the equation is "a^2 + b^2 = c^2”, fill in for "b" and "c" giving "a^2 + 15^2 = 18^2"
Solve for "a". Square each known value, leaving "a^2 + 225 = 324". Subtract 225 from each side, leaving "a^2 = 99" then use the square root on each side. Thus getting "a = 9.94987..., which rounded up is 9.95.

I hope this helps!
algol133 years ago
3 0
I am pretty sure the answer is 10. Someone correct me if I'm wrong
10 {}^{2}  + 15 {}^{2}  = 18 {}^{2}  \\ 100 + 225 = 325 \\  \sqrt{325} = 18
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