Question

What is the length of the dotted line in the diagram below? Round to the nearest tenth.

Answer 1

length of dotted diagonal line = 11

Explanation:

Using the Pythagorean theorem:

length of rectangle² = 9² + 6² = 81 + 36 = 117

length of rectangle = √117 = 10.82

length of diagonal² = 2² + 10.82² = 4 + 117 = 121

length of diagonal = 11