A solid sphere of diameter 7 cm is cut into two equal halves. What will be the increase (in cm.2) in the total surface area?
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Q:
A solid sphere of diameter 7 cm is cut into two equal halves. What will be the increase (in cm.2) in the total surface area?
- 1$$88 cm.^2$$false
- 2$$77 cm.^2$$true
- 3$$56 cm.^2$$false
- 4$$66 cm.^2$$false
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