Book Maths Puzzle

Alex designed the model of a cylindrical water tank to be installed in a park. The model has a radius of 5 cm and a height of 14 cm. The dimensions of the actual water tanks that will be installed in the park are 8 times larger than the model. The total surface area of the actual water tanks, rounded to the nearest whole number, is _________ cm2. Use 22 over 7 for pi.

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Book Other Question
If two sides of a triangle have lengths 3.2 and 5.4 then the length of the third side must be between
(A) 0.0 and 2.2
(B) 2.2 and 5.4
(C) 2.2 and 8.6
(D) 3.2 and 5.4
(E) 5.4 and 8.6 A soft-drink distributor has budgeted $300000 for the purchase of 12 new delivery truck. If a model A truck costs $18000, a model B truck costs $22000, and a model C truck costs $30000, how many truck of each model should the distributor purchase to use exactly all the budgeted funds?