Formulas
Formula of AREA
S = P*R^2
Find the area of a circle with radius 7 cm.
154 cm2
A circular garden has a radius of 7 m. What is the circumference of the garden?
44
The numbers follow a pattern:
2, 6, 12, 20, 30, ___
42
What is the radius?
....
Circumference formula?
C = 2PR
C =PD
Find the area of a circle with radius 14 cm.
616 cm2
A round pond has a diameter of 28 m. What is the circumference of the pond?
88 m
A code uses letters A=1, B=2, … Z=26.
If CAT = 3 + 1 + 20 = 24, what is the code for DOG?
DOG = D + O + G = 4 + 15 + 7 = 26
What is the diameter?
....
Radius=200cm
What is the D?
400 cm
A circle has diameter 28 cm.
Find the area using π = 22/7.
616 cm2
Diameter = 16
C=?
50.29
I am a number.
If you multiply me by 4 and subtract 6, you get 26.
What number am I?
8
What is the center of circle?
...
D=300cm
r=?
150cm
A round pond has a radius of 35 m.
Find its area using π = 22/7.
3850 m2
Radius = 35 cm
C=?
220 cm
Four friends — Anna, Ben, Chris, Dana — sit in a row.
Ben sits next to Chris.
Anna is not at either end.
Dana is at the far left.
What is the seating order?
Dana = far left
Anna not at either end → Anna in middle
Ben sits next to Chris
✅ Seating order: Dana, Ben, Anna, Chris
Show your talent
...
The value of P?
3.14 or 22/7
Bonus point
500
A circular swimming pool has a diameter of 21 m. How long is the boundary of the pool?
66 m
Lara has some coins: 3 10tenge, 5 twenty-tenge, and 2 fifty-tenge coins.
How much money does she have in total?
230
I am a 3-digit number.
My hundreds digit is twice my ones digit.
My tens digit is 1 less than my hundreds digit.
The sum of all digits is 14.
What number am I?
653