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Find the area of an Isosceles trapezoid with altitude 15 and diagonal 25.Code:A x B *---------------* /: * :\ / : * : \ / : * : \ / : 25 * : \ / 15: *: \ / : : * \ / : : * \ D *-------*---------------*-------* C : 20-x E x F 20-x : : - - - - 20 - - - - - :

We have isosceles trapezoid with diagonal

. . and altitudes

In right triangle

. . Hence: .

Let

. . Then: .

Hence: .

The area of a trapezoid is: .

We have: .