Question

PLEASE Help!!: Check for understanding:

Answer 1

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

     Area:  $S=r^2.\pi =(\frac{D}{2} )^2.\pi = (\frac{40}{2})^2.3,14=1256$

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

     Area:  $S=\frac{9.12}{2}+(\frac{12}{2} )^2.\pi = 167.04$

 

    ok done. Thank to me :>