1-the circumference of base of a right circular cylinder is 220cm if the height of the cylinder is 20 cm find the total surface area of the cylinder
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Answer:
12100cm²
Step-by-step explanation:
Circumference=2×pi×r=44r/7
44r/7=220 cm
r=220×7/44cm
r=35cm
Total Surface Area of a cylinder=2×pi×r(r+h)
We know,2×pi×r=220cm as given in the question.
Hence,T.S.A becomes 220cm(35cm+20cm)
=220cm(55cm)
=12100cm²
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