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Question

Joe bought a rectangular shaped farm. The length of his farm is 25 ft and the breadth is 35 ft. What is the area of Joe's farm in ft2?

A
65
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B
6
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C
1.55
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D
None of the above
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Solution

The correct option is A 65
We know:
Area of rectangle = Length× Breadth

Given,
Length of farm =25 ft
Breadth of farm =35 ft
Area of Joe's farm =(25×35)ft2

To calculate 25×35, we need to follow the rule for the multiplication of exponents with same exponent (5) and different bases (2,3).

Applying exponent rule: an×bn=(a×b)n, we get

Area of the farm
=(25×35)ft2
=(2×3)5=65 ft2

Therefore, option (a.) is the correct one.

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