How to find the area of a parallelogram

ISEE Lower Level Quantitative Reasoning · Learn by Concept

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ISEE Lower Level Quantitative Reasoning › How to find the area of a parallelogram

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Annie has a piece of wallpaper that is by . How much of a wall can be covered by this piece of wallpaper?

CORRECT

Explanation

This problem asks us to calculate the amount of space that the wallpaper will cover. The amount of space that something covers can be described as its area. In this case area is calculated by using the formula $A=l \times w$

$A=3\times2$

What is the length of a rectangular room with a perimeter of and a width of

CORRECT

Explanation

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

$\frac{50}{2}=\frac{2l}{2}$

Angela has a garden that she wants to put a fence around. How much fencing will she need if her garden is by

CORRECT

Explanation

The fence is going around the garden, so this is a perimeter problem.

What area of the rectangle is filled in?

2 6 rectangle

$\frac{2}{6}$

CORRECT

$\frac{2}{7}$

$\frac{2}{8}$

$\frac{2}{5}$

$\frac{2}{4}$

Explanation

Area is the amount of space within the perimeter of a two-dimensional shape. The rectangle is split into pieces and of those pieces are filled in.

$\frac{2}{6}$ of the area of this rectangle is filled in.

What is the length of a rectangular room with a perimeter of and a width of

CORRECT

Explanation

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

$\frac{28}{2}=\frac{2l}{2}$

Joe has a piece of wallpaper that is by . How much of a wall can be covered by this piece of wallpaper?

CORRECT

Explanation

$A=10\times8$

What is the length of a rectangular room with a perimeter of and a width of

CORRECT

Explanation

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

$\frac{64}{2}=\frac{2l}{2}$

What is the length of a yard with a perimeter of and a width of

CORRECT

Explanation

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

$\frac{10}{2}=\frac{2l}{2}$

David wants to put a fence around his backyard. How much fencing will he need if his backyard is by

CORRECT

Explanation

The fence is going around the backyard, so this is a perimeter problem.

What is the length of a yard with a perimeter of and a width of

CORRECT

Explanation

We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.

Subtract from both sides

Divide by both sides

$\frac{14}{2}=\frac{2l}{2}$

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