A rectangle has a length to width ratio of 12:5. If the length of the diagonal is 94.25 inches, calculate the area of the rectangle.

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?