In engineering, the modulus of elasticity is a way to measure how much an object deforms along an axis when opposing forces are applied among that axis. The formula can be expressed as E= (F2-F1)L0/(S2-S1)A, where E is the modulus of elasticity, F is the axial force, S is a deformation measure, L0 is the original length of the object, and A is the cross-sectional area.

Part A: Rearrange the elasticity formula to find the cross-sectional area, A.

Part B: Rearrange the elasticity formula to find the original length, L0, of the object.

I need to show my work so have an explanation.