Volume sebuah balok 2250 cm3. Panjang 15 cm, lebar 6 cm. Hitunglah luas permukaan balok ?

Volume = p x l x t
2250cm³ = 15cm x 6cm x t
2250cm³ = 90cm² x t
2250/90 = t
25 = t
t = 25cm

LP = 2 x (pxl + pxt + lxt)
LP = 2 x (15x6 + 15x25 + 6x25)
LP = 2 x (90 + 375 + 150)
LP = 2 x 615 cm²
LP = 1230 cm²

V.balok=p x L x t
2250=15 x 6 x t
2250=90 x t
t=2250/90
t=25 cm.
LP.balok=2(pl+pt+lt)
=2(15.6+15.25+6.25)
=2(90+375+150)
=2(615)
=1230 cm².