FORMULAS
DEFINITIONS
CIRCLES
AREA
CIRCLE GRAPHS
100
WHAT IS THE FORMULA FOR RADIUS OF A CIRCLE?
r=d/2
100
WHAT DO WE CALL THE DISTANCE FROM THE CENTRE OF A CIRCLE TO ANY POINT ON THE CIRCLE?
RADIUS
100

WHAT IS THE SUM OF THE PERCENTS IN A CIRCLE GRAPH?

100 %

100
WHAT IS THE AREA OF A PARALLELOGRAM WITH BASE 7CM, AND HEIGHT 5.5 CM?
38.5 CM SQUARED
100
45 PEOPLE WERE ASKED THEIR FAVORITE DRINK. 17 CHOSE PEPSI, 19 CHOSE COKE, AND THE REST CHOSE OTHER. HOW MANY PEOPLE CHOSE OTHER?
9
200

WHAT IS A FORMULA FOR DIAMETER OF A CIRCLE?

d=2r

200
WHAT DO WE CALL THE DISTANCE AROUND A CIRCLE?
CIRCUMFERENCE
200
WHAT IS THE DIAMETER OF A CIRCLE WITH RADIUS 2.7CM?
5.4CM
200
WHAT IS THE AREA OF A TRIANGLE WITH BASE 6.6 MM AND HEIGHT 10.2 MM?
33.66 MM SQUARED
200
THERE ARE 355 STUDENTS IN A SCHOOL. 32% OF THEM SAY THAT MATH IS THEIR FAVORITE SUBJECT. HOW MANY STUDENTS PREFER MATH?
114
300

WHAT IS THE FORMULA FOR AREA OF A PARALLELOGRAM?

area= base x height

300
WHAT DO WE CALL THE DISTANCE ACROSS A CIRCLE, MEASURED THROUGH ITS CENTRE?
DIAMETER
300
WHAT IS THE CIRCUMFERENCE OF A CIRCLE WITH DIAMETER 52.3MM?
164.2MM
300
WHAT IS THE AREA OF A CIRCLE WITH RADIUS 67.2CM?
14179.7 CM SQUARED
300
WHEN ASKED THEIR FAVORITE COLOR, 52% OF STUDENTS CHOSE BLUE, 19% CHOSE YELLOW, 7% CHOSE GREEN, AND THE REST CHOSE RED? WHAT PERCENT OF STUDENTS CHOSE RED?
22%
400
WHAT IS THE FORMULA FOR AREA OF A TRIANGLE?
area = base x height, divided by 2
400
WHAT DO WE CALL A QUADRILATERAL WITH BOTH SIDES OF OPPOSITE SIDES PARALLEL?
PARALLELOGRAM
400
WHAT IS THE RADIUS OF A CIRCLE WITH CIRCUMFERENCE 102CM?
16.24 CM
400
WHAT IS THE BASE OF A PARALLELOGRAM WITH AREA 42 CM SQUARED AND HEIGHT 7 CM?
6 CM
400
WHEN ASKED THEIR FAVORITE SPORT, 14 STUDENTS CHOSE BASKETBALL, 19 CHOSE HOCKEY, AND 10 CHOSE VOLLEYBALL. WHAT PERCENT OF STUDENTS CHOSE HOCKEY?
44%
500

WHAT IS THE FORMULA FOR AREA OF A CIRCLE?

area = pi x r2

500
WHAT DO WE CALL THE CIRCUMFERENCE OF A CIRCLE, DIVIDED BY THE DIAMETER?
PI
500
WHAT IS THE AREA OF A CIRCLE WITH DIAMETER 5M?
19.6 M
500
WHAT IS THE HEIGHT OF A TRIANGLE WITH AREA 22 CM SQUARED AND BASE 8 CM.
5.5 CM
500
JOHN SPENDS 6 HOURS A DAY AT SCHOOL, 8 HOURS SLEEPING, 2 HOURS DOING HOMEWORK, 1 HOUR EATING, 2 HOURS WATCHING TV, AND 5 HOURS ON OTHER ACTIVITIES. IF HE WERE TO CONSTRUCT A CIRCLE GRAPH SHOWING HIS DAILY ACTIVITIES, HOW MANY DEGREES SHOULD HE MAKE THE SECTOR LABELLED "SCHOOL"?
90 DEGREES
M
e
n
u