# Rectangular trapezoid

The rectangular trapezoid ABCD is: /AB/ = /BC/ = /AC/. The length of the median is 6 cm. Calculate the circumference and area of a trapezoid.

## Correct answer:

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

**geometry**- line segment
**algebra**- expression of a variable from the formula
**arithmetic**- square root
**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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