a cylindrical pillar is 28 CM in diameter and 3 metre in height what is the curved surface area
the answer is 26 400 CM square but I don't now how plzz tell mr
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a cylindrical pillar is 28 CM in diameter and 3 metre in height what is the curved surface area
the answer is 26 400 CM square but I don't now how plzz tell mr
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Given:
⇒ Height of a cylindrical pillar h = 3 m.
⇒ Diameter of a cylindrical pillar d = 28 cm = 0.28 m.
Then, radius of the cylindrical pillar r = 0.14 m.
We know that curved surface area of the pillar = 2πrh
⇒ 2 * (22/7) * (0.14) * 3
⇒ 2 * 22 * 0.02 * 3
⇒ 2.64 m^2
⇒ 2.64 * 10000 cm^2
⇒ 26400 cm^2.
Therefore, curved surface area = 26400 cm^2.
Hope this helps!
Verified answer
Curved surface area of cylinder = 2Πrh.d=28cm=> r=14cm.
h=3m=>300cm.
Π=22/7.
C.S.A. of cylindrical pillar= 2Πrh
2× r ×h ×Π
2× 14 × 300×22/7.
=>2×2×300×22 => 88×300=> 26,400 cm square.