A rectangle has a length equal to 6a ^ 4 b cm and a width equal to 7 a ^ 2 b cm. find the area plz help

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.

Find the missing dimension extra points

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.