Question

The lateral area of a right cone which has a base diameter of 4 units and a height of 10 units is:

Answer 1

≈64.08

Explanation:

Lateral Area=πr
`\sqrt{h^(2) +r^(2) }`

Radius is 1/2 of the diameter so r=2

Height=10

Substitute:

:
`3.141(2)\sqrt{10^(2)+2^(2) } \\6.282√(100+4) \\6.282√(104) \\ 64.066.282*10.2\\ 64.076\\\\`

64.076 rounded = 64.08