how to convert inches into square foot, if i have stone marble 133 inches in length and 33 inches in breadth,and per square foot amount is Rs 135

Answer :

Each square foot is =12*12=144 square inches
Area of marble=133*33=4389 square inches
                                 =4389/144=30.479 square feet
Cost of marble=30.479*135=4114.68
Cost is Rs 4114.68

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