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according to 8th class
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Explanation:
9052/7.60= 1191.05 cm²
..........
3x into 2x×7.5cm = 119 1.05 CM square
x=158.80/6=26 .46
.......
3*26.46=79.38
2*26.46=52.92...
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(a) speed of light will be maximum in vaccum> air> water> glass > diamond
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