Question

the radius of a base of cone in 20 cm. and perpendicular height is 16cm. find it's slant height.​

Answer 1

Answer:

OA=16cm,AB=l

l=

16

2

+12

2

=

256+144

l=20cm

curved surface Area,

C.S.A=πrl=3.14×12×20=753.6cm

2

Total surface Area,

T.S.A=πr(r+l)=3.14×12[12+20]=1205.76cm

2

Answer 2

☆ ANSWER ☆:-

GIVEN:-

r = 20Cm.

h = 16Cm.

TO FIND:-

Slant Height

SOLUTION:-

L² = h² + r²

L² = 16² + 20²

L² = 256 + 400

L² = √656

L² = 25.6.

Therefore ,

Slant Height ( L ) = 25.6 Cm.

• I Hope it's Helpful.