Question

Calcule a area total de um cilindro reto cujo diametro da base e 25cm ea altura 40cm.

Answer 1

D = 25 cm
r = 12,5 cm
h = 40 cm

At = 2 Ab + Al

At = 2 . pi r^2 + 2 pi r h

At = 2 . pi 12,5^2 + 2 pi 12,5 . 40

At = 2 . 156,25 + 2 . 500

At = 321,5 + 1 000

At = 1 321,5 cm^2