ISEE Lower Level Math : Plane Geometry

Study concepts, example questions & explanations for ISEE Lower Level Math

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Example Questions

Example Question #1041 : Isee Lower Level (Grades 5 6) Mathematics Achievement

Marcell wants to put a new fence around the perimeter of his garden. Marcell's rectangular garden is 30 feet long and 15 feet wide. How many feet of fence does Marcell need?

Possible Answers:

\dpi{100} 50\ feet

\dpi{100} 60\ feet

\dpi{100} 90\ feet

\dpi{100} 45\ feet

Correct answer:

\dpi{100} 90\ feet

Explanation:

\dpi{100} (30+30)+(15+15)

Example Question #1042 : Isee Lower Level (Grades 5 6) Mathematics Achievement

The length of a rectangle is , and the width of the rectangle is . What is the perimeter if  and ?

Possible Answers:

Correct answer:

Explanation:

If the length of a rectangle is  and the width is , the perimeter is:

Now plug in  and :

Example Question #15 : How To Find The Perimeter Of A Rectangle

If the perimeter of a rectangle is  inches and its length is twice the value of its width, what is the value of the width of the rectangle in inches?

Possible Answers:

 inches

 inches

 inches

 inches

Correct answer:

 inches

Explanation:

If the length of the rectangle is twice the value of its width, then if the width is equal to w, then the length is equal to 2w. 

Given that the perimeter of a rectangle is equal to the value of all the sides added together, the following equation would apply:

This means that the rectangle is  inches wide.

Example Question #18 : How To Find The Perimeter Of A Rectangle

The area of a rectangle is . One of its sides is . What is its perimeter?

Possible Answers:

Correct answer:

Explanation:

Remember that the area of a rectangle is equal to its base times its height. If its area is  and one side has a length of , we can find the other side by dividing these:

So, our rectangle looks like this:

Untitled_7

The perimeter is easily calculated:

Example Question #1043 : Isee Lower Level (Grades 5 6) Mathematics Achievement

What is the perimeter of the following rectangle?

Untitled_8

 

Possible Answers:

199.3

631.1

Correct answer:

Explanation:

The perimeter of a rectangle is very easy to solve.  Merely add up all the sides:

Example Question #1044 : Isee Lower Level (Grades 5 6) Mathematics Achievement

One of a rectangle's sides has a length of . Another of its sides is half that length. What is its perimeter?

Possible Answers:

Correct answer:

Explanation:

If one side of the rectangle is  and the other half of that, then the other side must be:

Our rectangle therefore looks like this:

Untitled_9

The perimeter is calculated very easily.  Just sum up all the sides!

Example Question #21 : How To Find The Perimeter Of A Rectangle

Lowerrectperim2

What is the perimeter of the above rectangle? 

Possible Answers:

 ft

 ft

 ft

 ft

 ft

Correct answer:

 ft

Explanation:

The perimeter of a rectangle is the length of all the sides added together. This rectangle has two short sides that are each  feet long and two long sides that are each  feet long. , so the correct answer is .

Example Question #21 : How To Find The Perimeter Of A Rectangle

Find the perimeter of a rectangle whose width is  and length is .

Possible Answers:

Correct answer:

Explanation:

To solve, simply use the formula for the eprimeter of a rectangle. Thus,

Example Question #22 : How To Find The Perimeter Of A Rectangle

Find the perimeter of a rectangle whose length is  and width is .

Possible Answers:

Correct answer:

Explanation:

To solve, simply use the formula for the perimeter of a rectangle. Thus,

Example Question #23 : How To Find The Perimeter Of A Rectangle

You need to cover your rectangular driveway in blacktop but you need the area to figure out how much material to get.  You would just add up all four sides to get our answer.  Is this statement true or false?

Possible Answers:

True

False

Correct answer:

False

Explanation:

The area of a rectangle is the length times the width not the sides added togther.  That would be the perimeter.

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