The cost of a square slab is proportional to thickness and also proportional to the square of its length. What is the cost of a square slab that is 3 m long and 0.1 m thick?

(1) The cost of a square slab that is 2 meters long and 0.2 meters thick is $160 more than the cost of a square slab that is 2 meters long and 0.1 meter thick
(2) The cost of a square slab that is 2 meters long and 0.1 meters thick is 300 more than the cost of a square slab that is 3 meters long and 0.1 meter thick








C = km (t/l^2) --- k - contant for thickness, m - constant for length.

C = km (0.1/9) ....i.e. Find km= ?


a) C1- C2 = 160
km(0.2/4 - 0.1/4) = 160
Suff
b) C1-C2 = 300
km(0.1/9 - 0.1/4) = 300
Suff