a spherical lemon is cut through the centre and 4 equal sections are made . compare the total srface area of the four sections to that of the original lemon. though the answer is available.. i want it a bit more CLEAR >
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total surface area of each part = total surface area of bigger sphere/4 + 2x area of semicircle
4\pi sq./4 + 2 x \pi r sq. /2
\pi sq. + \pi sq.
Total surface are of each part = 2 \pi r sq.
total surface area of 4 parts = 4 x 2 \pi r sq.
the ratio is 8 \pi r sq. / 2 \pi r sq. = 4
4\pi sq./4 + 2 x \pi r sq. /2
\pi sq. + \pi sq.
Total surface are of each part = 2 \pi r sq.
total surface area of 4 parts = 4 x 2 \pi r sq.
the ratio is 8 \pi r sq. / 2 \pi r sq. = 4
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