Question

Urgent !!!!!!!!!!!!!!!!​

Answer 1

4)

r = d/2 = 8/2 = 4 cm

V = π·r²·h = 16·25·π = 400π cm³

5)

L = 4l = 4·15 = 60 m

P = 2L + 2l = 2·60 + 2·15 = 120 + 30 = 150 m

6)

t = (30 - 10) + (60 - 40) = 20 + 20 = 40 s