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Step-by-step explanation:
perimeter of ABE = 5/2+18/5+11/4
= (50+72+55)/20
=17/20cm
perimeter of BCDE= 2(7/6+11/4)
= 2{(14+33)/12
= 2(44/12)
= 44/6cm
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Step-by-step explanation:
Acceleration due to gravity becomes half at a depth of half the radius of the earth.
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