Find the length of the unknown side. Round your answer to the nearest whole number.
Image of a right triangle with legs labeled 7 meters each. The hypotenuse is unknown.
7 meters 9 meters 10 meters 12 meters

Question

Find the length of the unknown side. Round your answer to the nearest whole number. 
Image of a right triangle with legs labeled 7 meters each. The hypotenuse is unknown. 
 7 meters 9 meters 10 meters 12 meters

anonymous · Answer

If the legs are equal, then it is a 45-45-90 triangle. And for a 45-45-90 triangle, the hypotenuse will be $$\large H~=~Leg\sqrt{2}$$

anonymous · Answer

I still don't get it

anonymous · Answer

Do you know how to substitute values into a formula?

anonymous · Answer

no sir

anonymous · Answer

Just plug "7" in as the leg. Multiplying 7 by $\sqrt{2}$ will get you the hypotenuse.

anonymous · Answer

ok I got 1.414213562373095

anonymous · Answer

Ok, so $$\large 7 \times 1.4142$$

anonymous · Answer

9.8994

anonymous · Answer

So which number would you round 9.9 to?

anonymous · Answer

10.0

anonymous · Answer

Right! So it would be 10 as your answer :)