Post a New Question

geometry

posted by .

what is the area of a isosceles trapezoid with legs of 15 feet and bases of 10 feet and 28 feet?

  • geometry -

    Draw a symmetric trapezoid. Mark the center of the bases

    On the long base, each side is covered by half the short base, of length 5. That leaves a triangle on each end that has base 9, hypotenuse 15.

    Looks like a 3-4-5 triangle to me, with height 12.

    area = (b+B)h/2 = (10+28)*12/2 = 228

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    The cross section of an attic is in the shape of an isosceles trapezoid. If the height of the attic is 9 feet, BC=12 feet, and AD=28 feet, find the length of line AB to the nearest foot. The triangle of the trapezoid is triangle ABE …
  2. math

    How do you find the area of a trapezoid with a height of 9 and 1/5 and two bases of 14 feet and 20 feet?
  3. Geometry

    A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. If the area of the lot is 8,100 square feet, what is the distance across the lot, i.e., the altitude of the figure?
  4. geometry

    A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. If the area of the lot is 8,100 square feet, what is the distance across the lot, i.e., the altitude of the figure?
  5. geometry help

    a trapezoid has base lengths of 4 and 19 feet, with an area of 115 square feet. what is the height of the trapezoid?
  6. geometry

    the longer base of an isosceles trapezoid is 14 feet. the nonparallel sides are each 10 feet long and the length of diagonal is 16 feet. find the measure of a base angle
  7. geometry

    a trapezoid has an area of 5 1/2 feet squared. if the trapezoid has a base that measures 2 2/3 feet and a height of 1 1/2 feet. what is the length of the other base?
  8. Math

    A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. If the area of the lot is 8,100 square feet, what is the distance across the lot, i.e. the altitude of the figure?
  9. Geometry

    A trapezoid has a perimeter of 14 feet. What will the perimeter be if each side length is increased by a factor 7?
  10. math

    The 2 parallel sides of a trapezoid measure 12 feet and 6 feet. If the height of the trapezoid is 7 feet. What is the area of the trapezoid?

More Similar Questions

Post a New Question