Finding Area of Rectangle Using Algebraic Expressions

How do you find the area of a rectangle?

• Length + Length + Length + Length
• Length + Width
• Length x Width
• Width x Width

Find the area of a rectangle with length (x-5) and width (3x+1).

• 3x²+16x-5
• 3x²-14x+5
• 3x²-14x-5
• 3x²+16x+5

• 1
• 2
• 3
• 4

What is the area of the rectangle when the length is 2x+3 and the width is 4x²-5x+6 ?

• 8x³ − 2x² + 3x + 18
• 8x³ − 2x² − 3x + 18
• 8x³ + 2x² − 3x + 18
• 8x³ + 2x² + 3x + 18

Express the area of the rectangle above in terms of x. _{^{(click on the image to enlarge)}}

• 8x²+28x+11
• 8x²-4x+11
• 8x²+4x-24
• 8x²+28x+24

Find a simplified expression for the area of the shaded region.

• 2x² + 2x + 13
• 10x + 5
• 10x + 13
• 2x² + 13

Find the area of the shaded region:

• 66x³ + 12x²
• 80x² - 24x
• 66x³ + 40x² + 24x
• 66x³ + 92x² -24x

^{The perimeter of the
 triangle is 10x+20. Find the length of the missing side}

• 6x+10
• 15x+30
• 5x+10
• 5x-10

What is the Area?

• 2x² - 3x - 18 inches²
• 2x² + 3x + 18 inches²
• 2x² + 9x - 18 inches²
• 2x² - 9x - 18 inches²

Find the perimeter of a rectangle with length (x-5) and width (3x+1).

• 8x-8
• 4x-4
• 8x+8
• 4x+12