Question

PLS ANSWER FULL ANSWERS

Answer 1

$diameter = 2r \\ radius = \frac{d}{2} \\ \\ circumference = 2 \: \pi \: r \\ \\ area = \pi {r}^{2}$

Answer 2

Answer:

1. R = 3cm

d = 6cm

C = 2πR = 2(3.14)(3) = 18.84cm

A = πR² = 3.14(3)² = 28.26cm²

2. R = 6inch

d = 12inch

C = 2πR = 2(3.14)(6) = 37.28inch

A = πR² = 3.14(6)² = 113.04inch²

3. R = 9mm

d = 18mm

C = 2πR = 2(3.14)(9) = 56.52mm

A = πR² = 3.14(9)² = 254.36m²

4. R = 4.8cm

d = 9.6cm

C = 2πR = 2(3.14)(4.8) = 30.144cm

A = πR² = 3.14(4.8)² = 72.35cm²

5. R = 7cm

d = 14cm

C = 2πR = 2(3.14)(7) = 43.96cm

A = πR² = 3.14(7)² = 153.86cm²

6. R = 14cm

d = 28cm

C = 2πR = 2(3.14)(14) = 87.92cm

A = πR² = 3.14(14)² = 615.44cm²