Circumference and area of circles
Mensuration · Mathematics
Study notes
Q: Circle radius 7: circumference and area. Diameter 10: circumference? C = 2π×7 = 14π ≈ 43.98. A = π×49 = 49π ≈ 153.94. Diameter 10: C = 10π ≈ 31.42 (C = πd!). Units: length vs square units!