In figure the object is made of two solids- a cube and a hemisphere. The base of the figure is a cube with edges of 5 cm and the hemisphere fixed on the top has a diameter of 4.2 cm find the total surface area of the object. (take π = 22/7
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Answer:
the total surface area of the object= 162.57 cm2
Step-by-step explanation:
Given:
diameter of hemisphere = 4 cm radius = 2 cm
Length of cube = 5 cm
Breadth of cube = 5 cm
Height of cube = 5 cm
T. S. A of the object = T. S. A of cube + C. S. A of hemisphere - Base area of hemisphere
= 6a^2 + 2πr^2 - πr^2
= 6(5) ^2 + 22/7*2*2
= 150+ 12.57
= 162.57
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