Question

Approximate the length of the diagonal of the square or rectangle to the nearest tenth.

Answer 1

diagonal = √80 or 8.9

Explanation:

Let's use pythagorean theorem here. Draw a diagonal separating the rectangle. We know that all the angles of a rectangle are 90 degrees. Therefore, we'll have a 90 degree triangle and we can use the pythagorean theorem.

4^2 + 8^2 = diagonal^2

16+64 = diagonal^2

80 =
`\sqrt{diagonal`

diagonal = √80 or 8.944

Answer 2

The answer is 8.9cm, hope I helped!