# Rectangular trapezoid

The ABCD rectangular trapezoid with the AB and CD bases is divided by the diagonal AC into two equilateral rectangular triangles. The length of the diagonal AC is 62cm. Calculate the trapezium area in cm square and calculate how many different perimeters of the ABC and ACD triangles are in centimeters.

### Correct answer:

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Calculation of an isosceles triangle.

Calculation of an equilateral triangle.

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Do you want to convert length units?

Calculation of an isosceles triangle.

Calculation of an equilateral triangle.

See also our trigonometric triangle calculator.

#### You need to know the following knowledge to solve this word math problem:

**geometry**- similarity of triangles
**algebra**- expression of a variable from the formula
**planimetrics**- Pythagorean theorem
- right triangle
- area of a shape
- perimeter
- triangle
- trapezoid

#### Units of physical quantities:

#### Grade of the word problem:

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