SSAT Upper Level Math : Area of Polygons

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #1 : How To Find The Area Of A Pentagon

A regular pentagon has an area of . Find the length of each side of the pentagon if the apothem has a length of .

Possible Answers:

Correct answer:

Explanation:

To find the area of a regular polygon,

For the given pentagon,

To find the length of each side of the pentagon, divide the perimeter by .

Example Question #10 : How To Find The Area Of A Pentagon

The area of a regular pentagon is . Find the length of a side of the pentagon if the apothem has a length of .

Possible Answers:

Correct answer:

Explanation:

To find the area of a regular polygon,

For the given pentagon,

To find the length of each side of the pentagon, divide the perimeter by .

Example Question #982 : Ssat Upper Level Quantitative (Math)

Find the area of a regular pentagon that has a side length of  and an apothem of .

Possible Answers:

Correct answer:

Explanation:

To find the area of a regular polygon,

To find the perimeter of the pentagon,

For the given pentagon,

So then, to find the area of the pentagon,

Example Question #983 : Ssat Upper Level Quantitative (Math)

Find the area of a regular pentagon that has a side length of  and an apothem of .

Possible Answers:

Correct answer:

Explanation:

To find the area of a regular polygon,

To find the perimeter of the pentagon,

For the given pentagon,

So then, to find the area of the pentagon,

Example Question #11 : How To Find The Area Of A Pentagon

Find the area of a regular pentagon with a side length of  and an apothem of .

Possible Answers:

Correct answer:

Explanation:

To find the area of a regular polygon,

To find the perimeter of the pentagon,

For the given pentagon,

So then, to find the area of the pentagon,

Example Question #1 : How To Find The Area Of A Square

The volume of a cube is 1,000 cubic centimeters. Using the conversion factor 2.5 centimeters = 1 inch, give its surface area in square inches, rounding to the nearest square inch.

Possible Answers:

96 square inches

75 square inches

108 square inches

100 square inches

144 square inches

Correct answer:

96 square inches

Explanation:

The surface area of a cube is six times the square of its sidelength, so we find the sidelength. This is the cube root of volume 1,000, so

  centimeters.

To rewrite this as inches, divide by 2.5:

    inches

The surface area of the cube in square inches is 

   square inches.

Example Question #1 : How To Find The Area Of A Square

The volume of a cube is 64 cubic inches. Find the side length of the cube and its surface area.

Possible Answers:

Correct answer:

Explanation:

The volume of a cube is where is the length of one edge, so is the cube root of volume:

 

 

A cube has six faces and the surface area of a cube is . So we can write:

 

Surface area = 

Example Question #2 : How To Find The Area Of A Square

A square has an area of 16 square inches. Give the diagonal of the square.

Possible Answers:

Correct answer:

Explanation:

In order to determine the length of the diagonal of a square we would use the Pythagorean Theorem. First we should find the side length:

 

 

 

Now, "square" the length of one side and multiply by 2, then take the square root of that number to get the length of the diagonal:

 

Example Question #3 : How To Find The Area Of A Square

John is going to apply a fertilizer to his farm which has a dimension of 200 feet by 200 feet. Every pound of the fertilizer that he is going to use is sufficient for 40 square feet. If the fertilizer costs 2 dollars per pound, how much he should spend to fertilize his farm?

Possible Answers:

Correct answer:

Explanation:

The area of the farm is:

 

square feet. So the amount of the fertilizer he needs can be calculated as:

 

pounds

 

Every pound of the fertilizer costs $2, so he needs to spend dollars.

Example Question #4 : How To Find The Area Of A Square

The diagonal length of a square is . Find the area of the square in terms of .

Possible Answers:

Correct answer:

Explanation:

We need to use the Pythagorean Theorem in order to solve this problem. We can write:

 

 

 

where is the diagonal length and is the side length. The diagonal length of the square is , so we can write:

 


 

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