Question

Can someone help me please please please

Answer 1

Use the Pythagorean theorem
`a^(2) + b^(2) = c^(2)` to find the missing side length of a right triangle

In this case, after you plug in the given numbers your equation is
`12^(2) + y^(2) = 20^(2)`

Then, Just solve that equation for y.


`144 + y^(2) = 400`


`x^(2) = 256`


`\sqrt{} y^(2) = √(256)`

y = 16

So the answer is B, 16 cm.

I hope this helps, please feel free to ask questions if you're still confused :)