k yg bisa tolong jawab yhh bsk dikumpulin semoga yang ngerjain dapet rezeki yg melimpah aminn

Luas selimut = π x r x s
    1.914 cm² = 22/7 x 21 cm x s
    1.914 cm² = 66 cm x s
                  s  =  1.914 cm² : 66 cm
                  s  = 29 cm

t = √s² - r²
  = √29² - 21²
  = √841 - 441
  = √400
  = 20 cm

Volume kerucut
= 1/3 x π x r² x t
= 1/3 x 22/7 x 21 cm x 21 cm x 20 cm
= 9.240 cm³