Martha's house is 17 m long and 21 m wide. How long is the diagonal of the house?

≈ 27 m

Step-by-step explanation:

Assuming the house is in the form of rectangle:

As per Pythagorean,

A hexagon is six equilateral triangles, so 12 30/60/90 triangles.

Each one has base half of the 6cm, so 3 cm.  There's an altitude of 3√3.

So twelve triangles has an area of 12(1/2)3(3√3) = 54√3 ≈ 93.5

D. 93.5 cm