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Answer:
total surface area=332.5cm^2
Step-by-step explanation:
given diameter =7cm
radius=7/2=3.5
total surface area of solid =surface area of cubical part + CSA of hemispherical part -area of base of hemispherical part
=6(edge)^2+2πr^2-πr^2
=6(edge)^2+πr^2
=6(7)^2+22/7×(3.5)^2
=294+38.5
=332.5cm^2
therefore,total surface area of solid =332.5cm^2
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