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3 years ago

How can I find the unknown side lengths when given the area or circumference of a figure?

Mathematics

1 answer:

ad-work [718]3 years ago

6 0

Answer:

Set up the area/circumference equations using x as the unknown variable. Then, solve for that variable and apply the correct unit.

Step-by-step explanation:

For example,

Find the side length of a square with an area of 49 square centimeters.

Since $area=s^{2}$ , i can write $49=s^2\\then take the square root of each side to solve for s.\\s=\sqrt{49} \\s=7 centimeters$

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3 years ago

2. Lab groups of three are to be randomly formed (without replacement) from a class that contains five engineers and four non-en

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Answer:

The number of different lab groups possible is 84.

Step-by-step explanation:

Given:

A class consists of 5 engineers and 4 non-engineers.

A lab groups of 3 are to be formed of these 9 students.

The problem can be solved using combinations.

Combinations is the number of ways to select k items from a group of n items without replacement. The order of the arrangement does not matter in combinations.

The combination of k items from n items is: ${n\choose k}=\frac{n!}{k!(n-k)!}$

Compute the number of different lab groups possible as follows:

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3 years ago

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Answer:

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