Formulas
Formula for the parallelogram
base times height or A=bh
Find the area of a parallelogram when the... Base= 6cm Height=7cm
42 cm squared
Find the area of a triangle when... Base= 5cm Height=12cm
30cm2
When given the area and one of the dimensions, how do I find the missing dimension?
I divide the area by the given dimension.
You are responsible for planting four flowers per square foot of your grandmother's garden. Her garden is a parallelogram with a height of 17.4 ft and a base of 14.4 ft.
Draw a picture of the garden, and find the area.
250.56 ft2
Formula for area of a triangle
1/2bh or bh/2
Find the area of a rectangle when the... Length= 12in. Width=9in.
What is 108in. squared
Find the area when then the...h=4in, b1=6 in and b2=8in
28 inches2
I have a 3in x 5in rectangle. Inside the rectangle is a square that has 2in sides. What is the area of the large rectangle without counting the square inside it?
11 in2
3x5=15
2x2=4
15-4=11 in2
A hotel constructs a rectangular room that is 60 feet by 40 feet. It plans to place a rectangular pool in the room that is 15 feet by 30 feet and a circular hot tub that is 8 feet in diameter.
Draw a picture of the room with the pool and hot tub.
Picture may vary.
Formula for area of a rectangle
A= bh or length x width
Find the area rhombus when the... diagonal1= 14ft. diagonal2=19ft.
What is 133 ft. squared
Find the area of a circle when ... Diameter = 12 in
113.1 in2
area=108 and b= 8
Find the missing dimension.
h= 13 units
You need to put a new carpet in the classroom. The length of the rectangular room is 30 feet, and the width is 25 feet. The cost of the chosen carpet is $3.49 per square foot.
What is the total area of the room and how much does it cost to carpet the room?
A=750 ft2
Total Cost = $2,617.50
Formula for trapezoid
A = (b1+b2)h/2
Find the area of a parallelogram when the... Base= 5in Height=7in
35 inches squared
Find the area trapezoid when then the... base1= 12 in, base2= 7 in, and height= 3 in
28.5 in2
Square A has area of 45in2. Inside square A is a parallelogram with b=3 and h=5. What is the area of the square A after you take out the parallelogram?
30 in2
While painting your bedroom, you spill a bunch of paint on your carpet and need to replace the carpet in your bedroom. Keep in mind, each of your walls is 17.5 ft long. Don't forget – your closet doesn't needs carpet. It is in the corner of your room and is 7.5 ft by 2.5 ft.
Draw your bedroom floor and find the area.
A=325 ft2
Formula for area of a circle
A= Pi x radius x 2 or pi x diameter
Find the area of the kite with diagonals 13 in and 25 in.
162.5 in2
Find the area of triangle: b=10.1 and h= 10
50.5 units2
A=120 in2, b=2.5in What is the height?
h= 48 in
The length of the rectangular room is 30 feet, and the width is 25 feet. The height of the room is 12 feet. A one gallon can of paint covers 450 square feet and it costs $26.96 per can.
How many gallon cans of paint should you buy and what is the total cost to paint all the walls in the room?
A=1320 ft2
You would have to buy 3 cans of paint.
$80.88