Formulas Part I
What is the formula for Distance?
Distance = Speed X Time
What is the formula for calculating Radius?
Radius = Diameter/2
DJ
Martin took 16 minutes to run a 400-meter track 4 times. Find his average speed
His average speed is 100m/min
Find the diameter of each circle:
1) radius 3cm
2) radius 16 m
3) radius 3.7cm
1) 6cm
2) 32m
3) 7.4cm
DJ
A van traveled 216 kilometers in 4 hours. Find its average speed in kilometers per hour
The average speed of the van was 54 km/h
What is the formula for calculating Diameter?
Diameter = 2 X Radius
What is the formula for calculating speed?
Speed = Distance/time
DJ
May walked 800 meters from her office to the parking lot. Her average speed was 40 meters per minute. She left at 5:23 pm. At what time did she arrive at the parking lot?
She arrived at 5:43 pm
Find the radius of the following circles:
1) Diameter 14.6 cm
2) Diameter 28.8 m
3) Diameter 17.2 m
1) 7.3cm
2) 14.4 m
3) 8.6 m
DJ
A car traveled at an average speed of 80 km/h for 5 hours. What was the distance traveled?
The car traveled a distance of 400 km
What is the formula for calculating Total Time?
Total Time = Total Distance / Average Speedf
DOUBLE JEOPARDY
What are the two ways in which you can write PI (in numerical form)?
3.14 & 22/7
DJ
Derek runs 150 meters in 25 seconds. What is his average speed in meters per second?
His average speed is 6m/sec
DJ
The diameter of a circle is 60cm. Find its circumference
The circumference is 188.4 cm
DJ
An airplane traveled 52 km in 4 minutes. Find its speed in km/min
Its speed is 13km/min
DOUBLE JEOPARDY
What is the formula for calculating circumference given its diameter?
Circumference = Pi X Diameter
DOUBLE JEOPARDY
What is the formula for calculating Average Speed?
Average Speed = Total Distance/Total Time
DJ
Carmen took 25 minutes to run a 600-meter track 5 times. Find her average speed
DJ
The diameter of a circle is 15cm. Find its circumference. (Take PI = 3.14)
47.1cm
DJ
A bus traveled 440km in 8 hours. The bus did not travel at the same speed all the time. Find the average speed of the bus in km/h
55km/h
DOUBLE JEOPARDY
List the 5 different parts of a circle
Circumference
Centre
Radius
Diameter
Line Segment
DOUBLE JEOPARDY
What is the formula for calculating circumference given its radius?
Circumference = PI X (Radius X 2)
DJ
Maddy walked 1100 meters from school to the park. Her average speed was 55 meters per minute. She left at 3:17 pm. At what time did she arrive at the park
She arrived at the park at 3:37 pm
DJ
The radius of a circle is 28m. Find its circumference. (take PI = 22/7)
176m
DJ
A train traveled 490 km at an average speed of 140km/h. What was the total time taken?