Circles
How do you find the circumference of a circle?
d * 3.14
A school staff meeting had 75 teachers in attendance, 64% of whom were first-year teachers. How many first-year teachers were in the meeting?
48 teachers
A rectangular prism measures 12 cm by 14 cm by 19 cm. What is the prism's volume?
3,192 cm3
How do you find the area of a circle?
r2 * 3.14
A school assembly had 60 students in attendance, and 30% of them were first-graders. How many first-graders were at the assembly?
18 students
A rectangular prism measures 15 cm by 13 cm by 27.8 cm. What is the prism's volume?
5,421 cm3
A semicircle's diameter is 15 cm. What is the semicircle's area? Use 3.14 for pi.Round your answer to the nearest tenth.
88.3 cm
In order to select new board members, the French club held an election. 94% of the 50 members of the club voted. How many members voted?
47 members
Layla wants to build a wooden box with a volume of 45 cubic centimeters. She started with a width of 3 cm and a height of 3 cm. How long should she make the box?
5 cm
The radius of a semicircle is 13 in. What is the semicircle's circumference?
40.82 in
When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is 20% of its normal value. What is a grizzly bear's normal heart rate when not hibernating?
50 beats per minute
Mia's jewelry box is 6 inches long. Its width is equal to its length. The volume of her jewelry box is 108 in3. What is the jewelry box's height?
3 cm
A circle's diameter is 34 cm. What is the distance around a quadrant of the circle? Use 3.14 for pi.
60.69 cm
The lunch choices last Friday were mushroom and pepperoni pizzas. The cafeteria made 70 pizzas in all, 30% of which were mushroom pizzas. 2/7 of the pepperoni pizzas have peppers on them as well. How many pepperoni pizzas have peppers?
14 pizzas
A rectangular prism's volume is 11,776 cm3. Its height is 23 cm. Its width is 1/2 its length. What is the prism's width?
16 cm