Find the total surface area of a hollow sylinder open at both ends, if its length is 28 cm, external radius is 7cm and thickness is 1cm
Answers
Answer:
TSA = 2π(R-r)h
Thickness =external radius- internal radius
Thus,r=6cm
TSA=2*22/7*1*28=176cm
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Answer:
The total surface area of a hollow cylinder is 2π ( r1 + r2 )( r2 - r1 +h), where, r1 is inner radius, r2 is outer radius and h is heightTo find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.Tricks to solve Volume and Surface Area Problems
CUBOID. Let length = l, breadth = b and height = h units. Then. ...
CUBE. Let each edge of a cube be of length a. Then, ...
CYLINDER. Let radius of base = r and Height (or length) = h. Then, ...
CONE. Let radius of base = r and Height = h. Then, ...
SPHERE. Let the radius of the sphere be r. ...
HEMISPHERE. Let the radius of a hemisphere be r.
Surface Area Formulas:
Volume = (1/3)πr2h.
Lateral Surface Area = πrs = πr√(r2 + h2)
Base Surface Area = πr2
Total Surface Area. = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))
Step-by-step explanation:
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