Question

The base radius of a cone is 5cm and its height is 12cm. Its slant height is
a.13 cm
b.19.5 cm c26 am
d.52 cm

Answer 1

Answer:

slant height = 13 cm

Step-by-step explanation:

r = 5 cm

h= 12 cm

let l be the slant height of the cone.

Now, we know by Pythagoras formula that

$l^{2}    =  r^{2}    +   h^{2}$

so , $l^{2}  = (5)^{2}    +   (12)^{2}$

or,  $l = \sqrt{25 + 144}    = \sqrt{169}   = 13$

Hence, the slant height l of the cone is 13 cm.

Answer 2

Answer:

The radius of a cone is 5cm.and height is 12cm.Find its slant height.

Step-by-step explanation:

The radius of a cone is 5cm.and height is 12cm.Find its slant height.The radius of a cone is 5cm.and height is 12cm.Find its slant height.