volume kerucut yng tingginya 28 cm dan garis pelukisnya 35 cm adalh

r = √s² - t²
  = √35² - 28²
  = √1.225 - 784
  = √441
  = 21 cm

Volume kerucut
= 1/3 x π x r² x t
= 1/3 x 22/7 x 21 cm x 21 cm x 28 cm
= 12.936 cm³

Diketahui :
Tinggi = 28 cm
Garis Pelukis = 35 cm

Ditanya :
Volume Kerucut = .....?

Penyelesaian :

Jari Jari = √35²-28²
=√1225-784
=√441
=21 cm

Volume Kerucut = ⅓ × π × r² × t
= ⅓ × 22/7 × 21² × 28
= ⅓ × 22/7 × 441 × 28
= ⅓ × 22 × 63 × 28
= ⅓ × 1386 × 28
= ⅓ × 38808
= 12936 cm³