Question

40 POINTS PLS HELP AYÚDAME PLS SORRY MATHk

Answer 1

Answer:

7. given:

circumference = 112.8 mm

circumference = $\pi$d     where d = diameter of the circle

$\pi$d = 112.8

d = 112.8 / 3.14

d = 35.92 mm     or     d = 3.592 × 10⁻² m

8. given:

circumference = 49.6 inches

                        = 1.26 m        ( since 1 inch = 0.0254 m )

circumference = 2$\pi$r     where  r= radius of the circle

2$\pi$r = 1.26

r = 1.26/2$\pi$

r = 20.06 cm    or     r = 0.2006  m

Hope it helps !

Answer 2

Answer:

=> πd = 112.8

=> d = 112.8/3.14

=> d = 35.92 mm

=> 2πr = 49.6

=> r = 49.6/6.28

=> r = 20 cm