The coefficient of linear expansion of nickel is 13×10−6 ∘C-1 . Find its coefficients of areal and cubical expansion?

coefficient of linear expansion of nickel is α=13×10-6oC-1       to find coefficient of areal expansion of nickel β=?coefficient of cubical expansion of nickel γ=? β=2α ; γ=3α substitute α value in above formlas β=2×13×10-6=26×10-6oC-1 γ=3×13×10-6=39×10-6oC-1