The top and bottom sides contribute 28 to the perimeter.
The two slanted sides have lengths that are the hypotenuses of a triangles with sides of 4 and 8. The hypotenuse is sqrt 80 = 8.944.
That makes the perimeter
28 + 2*8.944 = 45.89
Find the perimeter of an isosceles trapezoid with base lengths of 10 and 18 and height of 8.
1 answer
1 answer