Question

PLEASE HELP asap. Thank you so much to anyone that helps:)

Answer 1

398.5

Explanation:

a (surface area) = 2πrh + 2π
`r^(2)`

r (radius) = 8.4/2

r = 2.4

a = 2π (4.2 x 10.9) + 2π (4.2 x 4.2)

a = 2π x 45.78 + 2π x 17.64

a = 287.64 + 110.83

a = 398.5

Answer 2

to find radius; 8.4/2,

1. therefore 2×22/7×8.4/2×10.9=1079.76