Question

area of the base of a cone is 1386 sqcm and its height is 28cm find its surface area π = 22/7. with method​

Answer 1

Answer:

330 cm²

Step-by-step explanation:

Area of the base of a cone = 1386 cm²

πr² = 1386

r = 21 cm

Now,

l² = r² + h²

l² = 21² + 28²

l = 35 cm

Calculating surface area:

πrl

22/7 × 21 × 35

330 cm²

HOPE IT HELPS.......