Mathematics for IGCSE & O level - Mensuration (Section 4 - No. 2)
What is the formula for calculating the circumference of a circle?
C = πr²
C = πd
C = π * h
C = 2(l + w)
ব্যাখ্যা
The circumference of a circle is calculated using the formula C = πd, where d is the diameter.