Trapezoids
What is the formula for a trapezoid?
A = 1/2 (b1+b2) h
What is the formula for a rectangle?
A = L x W or. A = BH
What is the formula for a square?
A = S^2
A = s . s
What is the formula for a triangle?
A = 1/2bh
What is the formula for a parallelogram?
A = BH
A = ?
b1 = 2.5in
b2 = 3.5in
h = 5in
A = 15in^2
A = 35 m^2
L = 5 m
H = ?
H = 7 m
s = 35m
A = 1225 m^2
b = 16cm
h = 4cm
A = ?
A = 32 cm ^2
A = ?
B = 14ft
H = 9.9ft
A = 138.6 ft ^2
DAILY DOUBLEEEEEEEEE
b1 = 4ft
b2 = 2 ft
h = ?
A = 6 ft^2
h = 2ft
A = ?
L = 14ft
W = 7ft
A = 98 ft^2
A = 400 cm^2
s =
s = 20 cm
b = ?
h = 6cm
A = 30
b = 10
A = 29.75 in^2
h = 3.5in
b = ?
b = 8.5in
Many bridges use trapezoids structurally, because they can be made up of triangles, which are strong and rigid. For the bridge shown, if the top is 30 feet long, the bottom is 40 feet long, and the bridge has a height of 15, what is the area of the side of the of the bridge?
A = 525 square feet
A window is the shape of a rectangle, with each side being 20 inches long. The height of the window is 16 inches. What is the area in square inches of the glass needed for the window?
320 square inches
A square has a side length that measures 4.8 meters. How many square meters is the area of the parallelogram?
23.04 m^2
A traingular roof is built so that its height is half its base. If the base of the roof is 32 feet long, what is the area of the roof?
256 square feet
Harry is building a garden in the shape of a parallelogram that is 24 feet long. The garden will not be rectangular, thought, so he's not sure how wide it can be. He has enough materials to cover 84 square feet. How many feet wide can the garden be?
3.5 ft
trapezoid: 10
full shape: 28 km ^2
DAILY DOUBLEEEEEEE
Slide #4
88,000 square miles
Slide #5
A = 124 ft ^2
DAILY DOUBLEEEEEE
Slide #2
A = 370 ft^2
Slide #3
31 in^2