Question

PLEASE Help!!:
Check for understanding:

Answer 1

1) Circumference: C = D × π = 40 × 3.14 = 125.6

Area:
`S=r^2.\pi =((D)/(2) )^2.\pi = ((40)/(2))^2.3,14=1256\\`

2) Perimeter: P = 10.82 +10.82 + 12 + ( 12 . 3,14 )/2 = 52.48 mm

Area:
`S=(9.12)/(2)+((12)/(2) )^2.\pi = 167.04<mm^2>`

ok done. Thank to me :>