5 squares are placed end to end as below (see pic). What is the perimeter of the rectangle formed by the squares?

Mathematics

1 answer:

Nataly_w [17]3 years ago

5 0

2b: If x is 2.1, then one side of the rectangle is 2.1, and another is 2.1*5=10.5. Thus, the perimeter is 2*(2.1+10.5)=2*12.6=25.2.

3: One side of the square with side-length three will not be on the outside, so we have 3*3=9 inches perimeter from the square of side-length 3. The square of side-length 6 has 3 from the top side missing from the outer perimeter, because it coincides with a side of the square of side-length three. This square contributes 6*4-3=33 inches. The total perimeter is 33+9=42 inches.

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An equation in this instance is what you add to X to make Y true. Remember, This has to qualify for all of the numbers.

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Time for the 3rd equation!

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For the second one, it would make the equation: Y=3*2. 3*2 is 6, not 1. That makes the equation incorrect.

Now, time for the 4th (and final) equation!

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