Question

Find the lateral area of this cone.

Leave your answer in terms of T.
3cm
-4cm-
LA = [?]π cm²
Hint: Lateral Area of a Cone = Tre
Where = slant height
Enter

Answer 1

440/7

Explanation:

we can find slant Height (l) through hypotenuse formula

which is h² = a² + b²

a = 3cm

b = 4cm

here, h = slant height

h² = (3)² + (4)²

h² = 9 + 16 = 25

h = √25 = 5

h = 5

slant Height (l) = 5

LA of cone = πrl

22/7 × 4 × 5

22 × 20 /7

440/7