Curved surface area of a cone is 251.2cm^2 and radius of its base is 8cm. Find its slant hight and perpendicular height. (phi=3.14)
Attachments:
Answers
Answered by
39
curved surface area of cone = 251.2 cm²
πrl = 251.2 cm²
3.14*8*l = 251.2
l = 251.2/3.14*8 = 10 cm
slant height = 10 cm
l² = h²+r²
(10)² - (8)² = h²
h² = 36 ⇒ h = 6 cm
Perpendicular height = 6 cm
πrl = 251.2 cm²
3.14*8*l = 251.2
l = 251.2/3.14*8 = 10 cm
slant height = 10 cm
l² = h²+r²
(10)² - (8)² = h²
h² = 36 ⇒ h = 6 cm
Perpendicular height = 6 cm
skabuzar1:
thanks
Answered by
12
are you satisfied with this answer
Attachments:
Similar questions