Shapes
the name of the shape with three sides
triangle
To find the area of a triangle, you need to multiply the base times the height and divide by what number?
2
The distance that runs halfway across a circle is called what?
Length x width is the formula to find the area of what shape?
Rectangle
What is the formula for area of a rectangle?
Length x Width
the name of the shape with exactly four equal sides and four right angles
Square
the formula for finding the area of a triangle
A = 1/2 x base x height or A = (base x height)/2?
The distance from a point on the outside of the circle to another point across the circle is called what?
The width of a deck is 12ft. The length of a deck is 25 ft. Find the area of the deck.
300 sq. feet
What is the formula for finding the area of a circle?
3.14 (r^2)
To find the distance around the edge of this shape, you can use the formula Pi times the diameter. What is the shape?
Circles
Find the area of a triangle with a base of 12 feet and a height of 4 feet
24 square feet
The circumference of a circular garden is 37.68 feet. What is the diameter of the garden?
12ft
Two sides of a rectangle come together to form what kind of angle?
A right angle
Base x height divided by 2 is the formula for finding area of a triangle. What is another way to write this same formula?
1/2 (b x h)
What shapes make up a traditional four sided pyramid?
Triangles and a rectangle
Find the height of a triangle with an area of 35 square meters and a base of 7 meters
10 meters
Jim is wanting to buy a cover for his circular pool. Cover A cost's $80 and can cover up to 710 sq. feet. Cover B is $120 and can over up to 1,100 sq. feet.
Jim's pool is 30 feet wide. Which cover will fit his pool?
Cover A would cover his pool.
A rectangular garden has a width of 4ft and a length of 10 ft. A gardener is planting mostly tomato plants, but he is saving 10 sq. ft for jalapeño pepper plants. What area will the tomato plants take up in the garden?
The tomato plants will take up 30 sq. ft.
What two formulas can you use to find the area of a Pringle's can?
Area of a circle (times 2) + Area of a rectangle.
You are finding the surface area of a shape. You use the formula (l x w) + 2(3.14 x r^2). What is the 3D shape?
Cylinder
The base of a particular triangle is 6 meters. The area of that same triangle is 24 square meters. What is the height of the triangle?
24 meters
You are creating a circular fire pit. The distance across the fire pit is 3ft. The rock area around the fire pit is 8 feet wide. What is the area of the entire circular fire pit.
50.24 sq. ft.
The area of a rectangle is 45 inches. The length is 9 inches. What is the width?
5 inches
You are given a shape that looks like a tombstone, what two formulas can you use to find the area for the surface of the tombstone?
1/2(pi x r^2) + (l x w)