Answer :

**Given:**

Radius (*r*) of cylindrical part = 3.5 cm

Radius (*r*) of hemispherical part = 3.5 cm

Height of cylindrical part (*h*) = 10 cm

Surface area of article = CSA of cylindrical part + 2 × CSA of hemispherical part

= 2 πrh + 2 × 2 πr^{2}

= (2 π × 3.5 × 10) + (2 × 2 π × 3.5 × 3.5)

= 70 π + 49 π

= 119 π

= 17 × 22

= 374 cm^{2}

Hence, the total surface of the article = 374 cm^{2}

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