Basic Geometry : Basic Geometry

Study concepts, example questions & explanations for Basic Geometry

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Example Questions

Example Question #831 : Plane Geometry

 

If a checkerboard is a perfect square and has a diagonal length of , what would be the area of the board? Round to the nearest tenth of an inch. 

Possible Answers:

Correct answer:

Explanation:

To find the area, we first need to know the length of the sides. Since this is a perfect square, we can use the Pythagorean Theorem with just the value for the diagonal:

Now that we know the length of the sides, we can solve for area, which is really just the same value as :

 

Example Question #831 : Basic Geometry

What is the area of a square whose side length, , is 12?

Possible Answers:

Correct answer:

Explanation:

The formula for the area of a square is 

.

Example Question #832 : Basic Geometry

If the perimeter of a square is 45.2 centimeters, what is its area?

Possible Answers:

Correct answer:

Explanation:

Because this is a square, all the sides are the same, so the perimeter is 4 times whatever the side lengths area.

To find the side lengths, just divide by 4:

.

If the side lengths are all 11.3, the area would be 

Example Question #833 : Basic Geometry

One side of a square is 9cm long. What is the perimeter and area?

Possible Answers:

Another side of the square is needed to find the perimeter and area.

Correct answer:

Explanation:

Perimeter is the sum of all the sides.

A square has 4 equal sides. Therefore the perimeter is,

Area is length*width. In this case both the length and the width are 9.

Example Question #425 : Quadrilaterals

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The length of BC is twice the length of CD. The total area is . What are the lengths of lines BC and CD?

Possible Answers:

None of the answers given are correct.

Correct answer:

Explanation:

The area of any quadrilateral is equal to length x width. To find the area of the rectangle, set up an equation.

Since BC is twice the length of CD, you can replace the W in the equation with 2L

Now, your equation is

Bring the 2 to the other side by dividing each side by 2.

 or 

 

Example Question #834 : Basic Geometry

Know that in a Major League Baseball infield the distance between home plate and first base is 90 feet and the infield is a perfect square.

What is the area of a Major League Baseball infield?

Possible Answers:

 

Correct answer:

 

Explanation:

Because the infield is a square, the distance between each set of bases is 90 feet.

To find the area of a square you multiply the length by the width.

In this case

.

Example Question #152 : How To Find The Area Of A Square

Know that in a Major League Baseball infield the distance between home plate and first base is 90 feet and the infield is a perfect square.

What is the area of the half of the infield formed by home plate to first base, first base to second base, and an imaginary straight line between home plate and second base?

Possible Answers:

Correct answer:

Explanation:

Because this imaginary triangle is half of the entire infield it means it is the area of the square infield divided by two.

If the area if the infield is 90x90=8100 then the triangle is 8100 divided by two, which equals 4050 Square Feet.

Example Question #835 : Basic Geometry

Know that in a Major League Baseball infield the distance between home plate and first base is 90 feet and the infield is a perfect square.

If for some reason the baseball players decided to play with the basepaths at half of their usual length, what would the area of the infield be?

Possible Answers:

Correct answer:

Explanation:

If the base paths were half of their original length they would be 45 feet long.

To find the area of this new square, one must multiply 45 times 45.

This equals 2025 square feet.

Example Question #153 : How To Find The Area Of A Square

Know that in a Major League Baseball infield the distance between home plate and first base is 90 feet and the infield is a perfect square.

If a field designer accidentally put two infields right next to each other, what would the area of the giant infield be?

Possible Answers:

Correct answer:

Explanation:

The answer can be found multiple ways, either by adding the area of the two square infields together,

.

Or, by picturing the two infields as a rectangle and finding the are by measuring the length and the width. If the length of one side of an infield is 90 feet then the double infield rectangle will have a length of 180 feet and a width of 90 feet.

Therefore, 

Example Question #153 : How To Find The Area Of A Square

True or false: The area of a square with sidelength 3 is 12.

Possible Answers:

True

False

Correct answer:

False

Explanation:

Given the length of each side of a square, the area of the square is the square of this length. Therefore, since the square has sidelength 3, its area is 

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