Question

a conical tent having diameter of the base 24m and slant height 13m,find csa and tsa

Answer 1

Diameter =24m

Radius = Diameter/2 = 24/2 = 12m

Curved surface area = CSA = π r l  

Curved surface area = 3.14 * 12 * 13 = 489.84m²

Total surface area = TSA = π r ( r + l )

Total surface area = 3.14 * 12 (12 + 13) = 942m²

Answer 2

diameter of base of conical tent , d = 24m
so, radius of base of conical tent, r = 12m
slant height , l = 13m

so, curved surface area = πrl
= π × (12) × (13)
= 156π m²


and total surface area = curve surface area + base area
= πrl + πr²
= π(12)(13) + π(12)²
= 156π + 144π
= 300π m²