Math

Circles

100

What is the circumference of a circle that has a radius of 9.5 cm?

59.69 cm

200

What is the area of a circle that has a radius of 5 cm?

78.5 cm2

300

What is the area of a circle that has a diameter of 4.3 cm?

14.51cm2

400

What is the circumference of a circle that has a diameter of 5 cm?

15.7 cm

500

What is the radius of a circle if the circumference is 30.15cm?

4.8cm

triangles

100

Pythagorean Theorem is used to solve right angle triangles, what is the formula?

a2+b2=c2

where c = the hypotenuse

200

What is the area of a triangle that has a height of 8cm a side length of 4 cm and a base of 6 cm?

24cm2

300

Using the Pythagorean theorem formula: a² = c² - b², what is the height a ladder can get on a wall if the ladder length is 10m and the lower side of the ladder is 6m away from the wall.

a² = 10² - 6²

a² = 100 - 36 = 64

a = 8

8m

400

what is the side of a triangle that is located across from the right angle?

hypotenuse

500

Using the Pythagorean theorem formula: a2 + b2 = c2, what is the hypotenuse of the right triangle, if the sides are: 3cm, and 4cm?

5cm

area

100

What is the area of a rectangle that is 2.5 cm by 5 cm?

12.5 cm2

200

What is the diameter of a circle if the area is 95.32 cm2?

11.02cm

300

DOUBLE POINTS!

What is the surface area of a cylinder that has a radius of 3cm and a height of 13cm?

A=3.14x(3x3)

=28.26x2=56.52

c=3.14x6

=18.84

a=18.84x13 =244.92

Total =244.92+56.52 = 301.44 cm2

400

A lawn sprinkler sprays water 5 meters in every direction as it rotates. What is the area of the sprinkled lawn?

78.5cm2

500

What is the radius of a circle that has an area of 83.28cm2?

5.15cm

Riddles

100

A 300 ft train is travelling 300 feet per minute and must travel through a 300ft tunnel.  How long will it take to travel through the tunnel completely?

2 mins (from the front of the train starting, until the back of the train clears the tunnel)

TRIPLE POINTS

200

What number goes up and doesn't come back down?

your age

300

How did the soccer fan know that before the game the score would be 0-0?

The score is always 0-0 before the game

400

What weighs more a pound of iron or a pound of feathers?

Both weigh a pound

500

What did the triangle say to the circle?

you're pointless

Math Terms

100

an angle with degrees less than 90 (more than 0)

ACUTE angle

200

The bottom of a shape

base

300

a graph showing data using bars of different heights or lengths?

Bar graph

400

An acronym to remember order of operations?

BEDMAS or PEMDAS

500

The complete distance around a circle?

circumference