Which of the following could be the perimeter of a rectangle with an area of 18 square centimeters?

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

Answer:

The correct answer is c) 18 centimeters

Step-by-step explanation:

Given:

A = 18 cm²

We know that the formula for calculating area of a rectangle is

A = a · b where a is length and b is width

Possible choices is 6 · 3 and 9 · 2

Formula for calculating perimeter is

P = 2 ( a + b)

P₁ = 2 (6 + 3) = 2 · 9 = 18 cm²

P₂ = 2 (9 + 2) = 2 · 11 = 22 cm²

The obvious choice is P₁ = 18 cm²

God with you!!!

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The Lin family bought a dozen bagels. They ate 1/4 of the bagels today and 5/12 of the bagels yesterday. What fraction of the ba

lina2011 [118]

Answer:

2/3

Step-by-step explanation:

To be able to find what the total fraction of bagels eaten, the fractions need to have common denominators. To do this, you multiply 1/4 by 3 in both the numerator and the denominator. Now that the two fractions have the same denominator, you can add the fraction's numerator to get the total fraction, 8/12. However, 8/12 can be simplified more, so you divide by 4 and end up with 2/3.