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1 of 8 0-day streak

Surface area of solids

DIFFICULTYstandardchallenge
Question 1 of 8

Calculator allowed

A protective paint is applied to every included outer surface. The object is a closed cylinder

Its circular radius r is 2 m, and its perpendicular height h is 12 m

Both circular ends and the curved surface are included

Unrolled surface components, not to scale: two circular ends of radius r = 2 m, and a rectangular curved wall of width 2πr and height h = 12 m. Both ends are included.rr2πrh
Unrolled components, not to scale. The wall width equals the circumference
1 mark

Add the face-group contributions to determine the surface area. Give the answer to 1 decimal place

Format: 1 d.p.