Question

Find the missing side length.

Assume that all intersecting sides meet at right angles.
Be sure to include the correct unit in your answer.

Answer 1

4 cm

Explanation:

Take the 11 cm on the bottom and subtract the 7 cm right above it.

Imagine the bottom half of this shape as a rectangle, the bottom and top side are of the same length. The top side would have to be 11 cm in length as well, so just subtract 11-7 to get the missing part.