Use the gauss-seidel method with over-relaxation (λ = 1.2) to solve the following system of linear equations to a tolerance of εs = 5 %. carry-out pivoting to ensure convergence before the iterations.
− − = −38
− − + = −34
− + − = −20
(note: show at least one complete iteration in detail, preferably the first iteration.)

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.