Question

Find the circumference and area of circle which the radius is 3.5 cm

Answer 1

Answer:

circumference is 22cm and area is 38.48 sq.cm

Step-by-step explanation:

Circumference of the circle =2πr

=2×22/7×3.5

=22cm

Area of circle=$\pi$$r^2$=(3.143)(3.5)(3.5)

=38.484 sq.cm

Answer 2

Answer:

circumference of circle=22cm

area of circle=38.5cm^2

Step-by-step explanation:

$circumference \: of \: circle = 2\pi r \\ radius = 3.5cm \\ 2 \times \frac{22}{7} \times 3.5 \\ 2 \times \frac{22}{7} \times \frac{35}{10} \\ = 22cm \\ \\ area \: of \: circle = \pi {r}^{2} \\ \frac{22}{7} \times (3.5) {}^{2} \\ 38.5cm {}^{2}$