layla53
layla53 layla53
  • 20-05-2017
  • Mathematics
contestada

Hey (; can somebody please help me with this answer ...

Hey can somebody please help me with this answer class=

Respuesta :

lisee7 lisee7
  • 20-05-2017
Answer B
Pi times r times l + pi times r squared

Find l by doing Pythagorean 20^2+21^2= 841 the sq rt of 841 is =29
Pi (20)(29)= 580 pi. + 20^2 pi = 400 pi.
Answer. 980 pi
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