Find the Area rectangle (21)(21+12)

Math
l=21w=21+12
The area of a rectangle is equal to the length times the width.
(length)⋅(width)
Substitute the values of the length l=21 and width w=21+12 into the formula for the area of a rectangle.
21⋅(21+12)
Add 21 and 12.
21⋅33
Multiply 21 by 33.
693
Find the Area rectangle (21)(21+12)

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