Formulas for Area of Shapes

How do I find the perimeter of an object?

• Multiply the length by the width of the shape

• Add all the sides (outside of the shape)

• Calculate the area of the shape

• Subtract the smallest side from the largest side

What is the formula for finding the area of a triangle?

• @@A=rac{1}{2}bh@@

• @@A=b imes h@@

• @@A=rac{1}{3}bh@@

• @@A=rac{1}{4}bh@@

How do I find the range of a data set?

• Find the largest number and subtract the smaller number.

• Add the smallest and largest numbers together.

• Multiply the largest number by the smallest number.

• Divide the largest number by the smallest number.

What is the formula for finding the area of a rectangle?

• @@A = LW@@ (length times width)

• @@A = L + W@@ (length plus width)

• @@A = 2L + 2W@@ (perimeter formula)

• @@A = L^2@@ (area of a square)

How do you find the median of a data set?

• Put the numbers in order from least to greatest, then find the number that is in the middle. If there are two middle numbers, add the two numbers together and divide by 2.

• Calculate the average of all the numbers in the data set.

• Identify the largest number in the data set and use it as the median.

• Count the total number of numbers and select the first number as the median.

What is the formula for finding the area of a trapezoid?

• @@A=rac{1}{2}ig(b_1 + b_2ig)h@@

• @@A=b imes h@@

• @@A=rac{1}{2} imes (b_1 + b_2) imes h^2@@

• @@A=rac{1}{3}(b_1 + b_2)h@@

When finding the perimeter of an object, are you looking on the inside or outside of the object?

• inside

• outside

• both inside and outside

• only the edges

How do you find the mode of a data set?

• The mode is the number that is used the most.

• The mode is the average of all numbers in the data set.

• The mode is the middle value when the data set is ordered.

• The mode is the sum of all numbers divided by the count of numbers.

When you are finding the area of an object, are you looking inside the object or outside the object?

• inside

• outside

• around

• beneath

What is the formula for finding the area of a parallelogram?

• @@A=bh@@

• @@A=rac{1}{2}bh@@

• @@A=b^2@@

• @@A=rac{1}{2}(b_1 + b_2)h@@