Question

a 5 cm cube is cut into 1 cm cubes. find the percentage increase in surface area after such scotting

Answer 1

total no of cubes is equal to vol. of larger /vol. of small
volume of cube is equal to 5 cube divided by 1 cube that is equal to 125
S a. of 125 cube with each of them has 6cm² area
S. a. = 125×6=750cm²

S. a of larger cube = 6×5²=150cm²
percentage =100(750-150)/150
percentage increases = 400per

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