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Step-by-step explanation:
Radius of the cylinder = 3.5m
Height = 7m
Total surface area of container excluding the base = Curved surface area of the cylinder + area of hemisphere
= 2πrh + 2πr²
=[ 2× 22/7 × 3.7 × 7 ] + [ 2× 22/7 × 3.5 × 3.5 ]
= 154 + 77
= 231m²
Volume of the container = πr²h + ⅔ πr³
= [2 × 22/7 × 3.5 × 3.5 × 7] + [ ⅔ × 22/7 × 3.5 × 3.5 × 3.5 ]
= 539/2 + 539/6
= 1617 + 539 / 6
= 359.33m³
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