Use=3.14 ,round off the final answer to nearest decimal place and write correct unit of measure.? 6cm,15cm.?

The circumference of a circle can be calculated using the formula C = 2πr, where r is the radius of the circle.

Given that the radius is 6 cm, we can calculate the circumference as:
C = 2 * 3.14 * 6
C = 37.68 cm

Therefore, the circumference of a circle with a radius of 6 cm is approximately 37.7 cm.

Given that the radius is 15 cm, we can calculate the circumference as:
C = 2 * 3.14 * 15
C = 94.2 cm

Therefore, the circumference of a circle with a radius of 15 cm is approximately 94.2 cm.

Area of circle = πr²
= 3.14 × (6cm)²
= 3.14 × 36cm²
= 113.04cm²
Rounded off to nearest decimal place, the area is 113.1 cm².