Trapezoid
What is the formula for a trapezoid?
What is b1 times b2 divided by 2 times height.
What is the formula for area of a circle?
What is pi times radius squared.
What is the formula of a semicircle?
What is area = pi x radius squared divided by 2.
What is the formula for area of a triangle?
What is the formula of a parallelogram?
What is area = base x height.
What makes a trapezoid a trapezoid?
What is the outer edge of a circle called?
What is the circumference.
What is the outside edge of a semicircle called?
What is the perimeter.
How do you find the perimeter of a triangle?
You add up all the edges.
What makes a parallelogram a parallelogram?
What is two sets of parallel lines.
A gardener has a trapezoid-shaped flower bed. The parallel sides (bases) are 10 feet and 14 feet long. The distance between them (height) is 5 feet. What is the area of the flower bed?
What is 60 sq. feet.
What is the formula for the circumference of a circle?
What is circumference = pi x diameter.
What is the formula for a perimeter of a semicircle?
What is circumference = pi x diameter divided by 2 plus diameter.
A small sailboat has a triangular sail with a base of 10 feet and a height of 15 feet. What is the area of the sail?
What is 75 sq. feet.
A slanted parking space is shaped like a parallelogram. It has a base of 9 feet and a vertical height of 18 feet. What is the area of the parking space?
What is 162 square feet.
A window is shaped like a trapezoid with bases of 3 feet and 5 feet. The height is 4 feet. How many square feet of glass are needed?
What is 16 square feet.
A large pizza has a diameter of 16 inches. What is the total area of the pizza in square inches?
What is 200.96 in squared.
A semi-circular window has a diameter of 6 feet. What is the area of the glass?
What is 14.13 square feet.
A sports pennant is a triangle with a base of 8 inches and a height of 20 inches. How much felt is needed to make one pennant?
What is 80 square inches.
A parallelogram-shaped garden has an area of 48 square feet. If the base of the garden is 8 feet long, what is its height?
What is 6 feet.
A section of a driveway is a trapezoid. The parallel sides are 8 meters and 12 meters. The height is 10 meters. If it costs $5 per square meter to seal the driveway, how much will this section cost?
What is $500.
A carpenter is building a circular tabletop with a radius of 3.5 feet. If the wood costs $15 per square foot, what is the total cost of the wood for the tabletop?
What is area = 38.465
Total cost is $576.98
A gardener wants to put a decorative fence around a semicircular flower bed that has a diameter of 12 feet. How many feet of fencing does she need?
What is 30.84 feet.
Triangular Garden: A triangular garden has a base of 12 meters and a height of 8 meters. If a bag of fertilizer covers 10 square meters, how many bags are needed for the whole garden?
area = 12 times 8 divided by 2 = 48 meters squares
5 bags are needed.
Flooring Problem: A rectangular room measures 15 feet by 20 feet, but has a 3-foot by 4-foot fireplace hearth in the corner that cannot be tiled. What is the total area of tile needed?
Identify the area to be tiled by subtracting the hearth from the room.