what is the formula for calculating are and perimeter of circle?
Answers
Step-by-step explanation:
perimeter :
A circle’s perimeter is called the circumference. The symbol of the circumference is C. One can calculate by making use of the formula PZi x diameter, or 3.14 x d = C.
The formula for the circumference of a circle is,
C = 2πR
Area of any geometrical figure is the space occupied by it on a two-dimensional plane. Now, what is the area of a circle? Well, the area of a circle is the space occupied by it with a certain radius on a two-dimensional plane. So, if your parents want to put new carpet in your circular room, how much carpet you need to buy? Again, it will be equal to the area of the room.
Area of Circle = πR2
Question 1. Find the area of a ring-shaped region enclosed between two concentric circles of radii 20 cm and 15 cm
550 cm²
500 cm²
750 cm²
950 cm²
Answer : A. Area of the shaded region = π (20²) – π (15²)
= 400 – 225 × 22/7
= 175 × 22/7
= 550 sq.cm.
OK Anil,