Question

Tolong bantu ya No 20

Answer 1

R= 7 cm
s= √24²+7² = 25 cm

L = (1/2)Lbola + selimut kerucut
   = (1/2).4.π.r² + π.r.s; s= sisi miring kerucut
   = 2π.7² + π.7.25
   = 98π+175π
   = 273π cm²
   = 857,65 cm²..........opsi A