Circles
The distance around a circle is called what?
Circumference
What is the distance half way across a circle?
Radius
What is the formula for finding the area of a triangle?
A = base x height
What is the formula for calculating the area of a parallelogram?
A = base x height
If you are calculating the area inside a shape, what are you measuring?
Area
What is the formula for calculating the area of a circle?
A = pi x r x r
If a circle has a diameter of 18 cm, what is its radius?
9 cm
What is the area of a triangle with a base of 6 cm and height of 3 cm?
9 cm2
What is the area of a parallelogram with a base of 17 cm and height of 9 cm?
153 cm2
What is the radius of the circle in the picture? (see picture)
18 ft
What is the distance across a circle?
diameter
What is the formula for calculating circumference?
C=2 x pi x r
What is the base of a triangle with an area of 45 cm2 and a height of 9 cm?
10 cm
What is the base of a triangle with an area of 35 cm2 and a height of 7 cm?
5 cm
What is the area of this triangle? the measurements are in cm (See picture)
24 cm2
What is the circumference of a circle that has a radius of 6 m?
37.7 m
What is the area of a circle that has a radius of 4 cm?
50.27 cm
What is the height of triangle if its base is 5 m and its area is 20 m?
8 m
What is the height of a parallogram with a base of 10 cm and an area of 130 cm2?
13 cm
A triangle with a base of 4 m and an area of 44 m2 has what height?
22 m
What is the area of a circle that has a diameter of 12 m?
113.10 m2
What is the circumference of a circle with a diameter of 23 cm?
72.26 cm
A sailboat has two sails. Sail one has a base 4 m and height of 6 m, and sail two has a base of 5 m and height of 6 m. How much material is required to replace both sails?
27 m2
Calculate the area of this parallelogram (see picture)
50 in2
A goat is tied to a post by a 9 m long rope. What is the greatest amount of space in its reach that the goat has to graze?
254.47 m2