Class 9 maths ch 13 exercise 13.1 and 13.8 all the formulas used.....
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Formulas used in exercise 13.1 are:
Total Surface area of cuboid: 2(lb+bh+lh)
Lateral Surface area of cuboid: 2(l+b)h
Lateral Surface area of cube: 4a^2
Total surface area of cube: 6a^2
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