What is the length of the rectangle? If you had said one of the sides of a square was 3 inches, you could multiply 3 inches by 3 inches to get the value in square inches.
Area = 3l square inches, where l = length of the rectangle in inches.
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To find the area of a rectangle, multiply the length by the width. 3 x 5 = 15. Do not forget to include the units, however - if the units of the rectangle are in inches, then the answer to the question will be 15 inches squared (15 in2).
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The area of rectangle is : 21.0
Perimeter = length + width + length + width = 2 x (length + width) Given: perimeter = 22in length = width + 3in Thus 22 = 2 x (width + 3 + width) 11 = 2 x width + 3 8 = 2 x width 4 = width So the width is 4in.
To find the area of a rectangle, you multiply the length by the width. In this case, the length is 10 feet and the width is 3 feet. Therefore, the area of a 10ft by 3ft rectangle is 10 feet x 3 feet = 30 square feet.