Diameter vs Radius
Which means from the center to the outside?
Radius
The radius of a drinking cup was 4cm, what is the circumference of the circle drinking cup?
25 cm
You have the blueprint of a composite figure shaped house, the main shape is a square with a length of 10 feet. The second figure was a triangle that has the height of 7 feet, what is the TOTAL AREA? (No label no points)
135 feet2
If you are given fractions when you are finding the area of a shape, what should you do with those fractions to make it easier?
Change the fraction into a decimal
What is the formula for a square/rectangle?
L x W or B x H
Which goes through the center of the circle and touches both sides?
Diameter
The diameter of a pizza was 22 inches, what is the circumference of the circle?
69.05 inches
A backboard of a basketball hoop was made up of a semi-circle and a rectangle. The width/base of the rectangle was 4 feet, the length/height was 5 feet. The radius of the circle was 2, find the total area of the backboard.
26.28 feet2
Fill in the missing sides
Whats the formula for area of a circle?
A = 3.14 (r2) or A = 3.14 (r x r)
Which can be used to find the circumference of a circle?
HA jokes on you both
The diameter of a circle street sign was 30 in, what is the area of the sign? (round to the nearest tenth if needed)
706.5
A countertop was made up of 2 rectangles that were the same size and a triangle. The width/base of the rectangles was 2.5 feet and the length/height of the 1.5 feet. The base and height of the triangle area shared with the length/height of the rectangle. What is the total area?
8.625 feet2
37.5 in2
C = 2 (3.14) r OR C = 3.14 (d)
What is the formula to find the radius of a circle when you know the diameter?
Radius = diameter divided by 2
You wanted to buy a circle burrito blanket off the internet, and it had a radius of 2.5 feet. You wanted to add some cloth to make it look like it had lettuce and cheese coming out all the way around the edges. What is the measurement of the cloth you will need?
15.7 ft
Picture a model of a rectangular stove top with 4 circle burners. The rectangle has a width/base of 24in and a length/height of 22in. Each burner has a DIAMETER of 6in, what is the total area of the stove top WITHOUT THE CIRCLE BURNERS?
420 in2
You have a semi-circle attached to the base of a triangle making the ice cream cone shape. The diameter of the circle is 12m, and the height of the triangle is 7m. What is the total area of the shape?
98.52 m2
What is the area of a semi-circle?
A = 3.14 (r2)/2 or A = 3.14 (r x r)/2
(Remember the backslash means divide)
What is the formula for finding the diameter when you know the radius?
Diameter = radius times 2
There are 30,000 dots on a basketball if each dot has a radius of 1 millimeter, what is the total area of all the dots on a basketball?
94,200 mm2
A sprinkler head sprays a circle underwater to water some seaweed. The diameter of the circle it sprays is 16ft. What is the area of underwater that this sprinkler sprays? (round to the nearest hundredths place)
200.96 ft2
Who is going to win the Super Bowl?
The Bengals
What is the formula for a trapezoid?
A = (b1 + b2) x h / 2