Volume tabung yang keliling alasnya 88cm,tinggi20cm

Mapel : Matematika
Bab : Bangun Ruang Sisi Lengkung

Keliling = 2 x π x r
  88 cm = 2 x 22/7 x r
  88 cm = 44/7 x r
          r = 88 cm x 7/44
          r = 14 cm

Volume tabung
= π x r² x t
= 22/7 x 14 cm x 14 cm x 20 cm
= 12.320 cm³

K =>> 2 π r
88 =>> 2 × 22/7 × r
r =>> 88/2 / 22/7
=>> 44 × 7/22
=>> 14 cm

V =>> π r ^2 × t
=>> 22/7 × 14 × 14 × 20
=>> 6.160 cm3