Question

Volume balok yang mempunyai p = 9cm, l=12cm, dan diagonal ruang17cm

Answer 1

Diagonal bidang = db
db^2 = p^2 + l^2
db^2 = 9^2 + 12^2
db^2 = 81 + 144
db^2 = 225
db = 15 cm

diagonal ruang = dr
dr^2 = db^2 + t^2
17^2 = 15^2 + t^2
289 = 225 + t^2
t^2 = 64
t = 8 cm

volume = p x l x t
= 9 x 12 x 8
= 864 cm^3