Answer:
3) circumference = 15.7 m
Area = 19.625 m²
Step-by-step explanation:
Area and circumference of circle:
3) First find the diameter of the circle, using Pythagorean theorem.
We are using Pythagorean theorem to find the diameter as the given triangle is right angle triangle.
Hypotenuse² = base² + altitude²
= 3² + 4²
= 9 + 16
= 25
Hypotenuse = √25
d = 5 m
Circumference of circle = πd
= 3.14 * 5
= 15.7 m
r = 5 ÷2 = 2.5 m
Area of circle = πr²
= 3.14 * 2.5 *2.5
= 19.625 m²
