Math Formulas 2025/2026 Exam
Questions Marking Scheme New Update
1
| A+ Rated
Exterior angles of a regular polygon add up to - 🧠 ANSWER ✔✔360
sum of interior angles of a polygon - 🧠 ANSWER ✔✔(n-2)180
N- number of sides
if the polygon is regular and has n sides, then each exterior angle.. - 🧠
ANSWER ✔✔= 360/n
If a polygon is "regular," what does that mean? - 🧠 ANSWER ✔✔All angles
are the same size and all sides are the same length.
completing the square - 🧠 ANSWER ✔✔(x+(b/2)^2 + c - (b/2)^2
Exponential decay - 🧠 ANSWER ✔✔P(1-r/100) to the power of t
Area of a sector - 🧠 ANSWER ✔✔x°/360 times (∏r²), where x is the
degrees in the angle
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Length of an arc - 🧠 ANSWER ✔✔2πr(xdegrees/360)
Exponentially infers - 🧠 ANSWER ✔✔Compound interest
2
Real numbers - 🧠 ANSWER ✔✔All rational and irrational numbers
Rational numbers - 🧠 ANSWER ✔✔All positive and negative integers,
fractions and decimal numbers.
Irrational numbers - 🧠 ANSWER ✔✔Any real number which cant be
expressed as a fraction of two integers
Profit percentage - 🧠 ANSWER ✔✔profit/cost price x 100
Loss percentage - 🧠 ANSWER ✔✔loss/cost price x 100
Area of a circle - 🧠 ANSWER ✔✔A=πr²
Perimeter of a circle - 🧠 ANSWER ✔✔2πr (circumference)
Area of a semicircle - 🧠 ANSWER ✔✔A=½πr²
Perimeter of semicircle - 🧠 ANSWER ✔✔P = ½ x pi x diameter + diameter
Total surface area for cylinder - 🧠 ANSWER ✔✔2πrh + 2πr²
Total surface area for cone - 🧠 ANSWER ✔✔Pi x r (l + r)
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions Marking Scheme New Update
1
| A+ Rated
Exterior angles of a regular polygon add up to - 🧠 ANSWER ✔✔360
sum of interior angles of a polygon - 🧠 ANSWER ✔✔(n-2)180
N- number of sides
if the polygon is regular and has n sides, then each exterior angle.. - 🧠
ANSWER ✔✔= 360/n
If a polygon is "regular," what does that mean? - 🧠 ANSWER ✔✔All angles
are the same size and all sides are the same length.
completing the square - 🧠 ANSWER ✔✔(x+(b/2)^2 + c - (b/2)^2
Exponential decay - 🧠 ANSWER ✔✔P(1-r/100) to the power of t
Area of a sector - 🧠 ANSWER ✔✔x°/360 times (∏r²), where x is the
degrees in the angle
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Length of an arc - 🧠 ANSWER ✔✔2πr(xdegrees/360)
Exponentially infers - 🧠 ANSWER ✔✔Compound interest
2
Real numbers - 🧠 ANSWER ✔✔All rational and irrational numbers
Rational numbers - 🧠 ANSWER ✔✔All positive and negative integers,
fractions and decimal numbers.
Irrational numbers - 🧠 ANSWER ✔✔Any real number which cant be
expressed as a fraction of two integers
Profit percentage - 🧠 ANSWER ✔✔profit/cost price x 100
Loss percentage - 🧠 ANSWER ✔✔loss/cost price x 100
Area of a circle - 🧠 ANSWER ✔✔A=πr²
Perimeter of a circle - 🧠 ANSWER ✔✔2πr (circumference)
Area of a semicircle - 🧠 ANSWER ✔✔A=½πr²
Perimeter of semicircle - 🧠 ANSWER ✔✔P = ½ x pi x diameter + diameter
Total surface area for cylinder - 🧠 ANSWER ✔✔2πrh + 2πr²
Total surface area for cone - 🧠 ANSWER ✔✔Pi x r (l + r)
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
