5.5 "Cone Lateral Area"
 The lateral (side) surface area does NOT include base area TOTAL surface area = lateral surface area + base area The lateral surface area does NOT include base area TOTAL surface area = lateral surface area + base area Lateral Surface Area ? Base (circle) Area ? The cone HEIGHT (h) forms a right angle with the base The SLANT HEIGHT (t) runs along the side of the cone height ? slant height ? radius ?  Lateral (side) SA = (π) x (radius) x (slant height) 8 6 10 π x x π square units Lateral (side) SA = (π) x (radius) x (slant height) 12 5 13 π x x π square units Lateral (side) SA = (π) x (radius) x (slant height) 4 3 Use the PYTHAGOREAN THEOREM to find the slant height (it's a Pythagorean TRIPLE) Lateral (side) SA = (π) x (radius) x (slant height) 4 3 5 π x x π π square units Lateral (side) SA = (π) x (radius) x (slant height) 12 5 Use the PYTHAGOREAN THEOREM to find the slant height (it's a Pythagorean TRIPLE) Lateral (side) SA = (π) x (radius) x (slant height) 12 5 13 π x x π π square units Find the slant height of these cones (use pythagorean thm) 8 6 12 5 24 10    Which cone is the tastiest? (that's right) . . . The End |
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