The length of a circle inscribed in a rectangular trapezoid is 24π cm. Calculate the area of the trapezoid

| March 28, 2021 | education

The length of a circle inscribed in a rectangular trapezoid is 24π cm. Calculate the area of the trapezoid if its lower base is 10 cm larger than the upper one.

We have a trapezoid ABCD, where AB, CD are the sides, BC, AD are the bases. If a circle can be inscribed in a quadrilateral, then AB + CD = BC + AD, based on the fact that the length of the circle is 24π, then the radius is 12, then the side AB is 24 cm.Let us draw the height CK, then KD = 10 cm, the length of the height is equal to the length AB and is equal to 24 cm, according to the Pythagorean theorem, we find the hypotenuse CD from the right-angled triangle CKD: (10 ^ 2 + 24 ^ 2) ^ 1/2 = 26 cm, let BC – x, AD – (x + 10):
x + x + 10 = 24 + 26
x = 20
Then the area is equal to:
S: ((20 + 30) / 2) * 24 = 600



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.