What is the area of 10 length and a 3.5 width

35

Step-by-step explanation:

The formula for area is length x width, so we multiply 10 x 3.5, which equals 35.

Hope this helps :)

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step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.