英语翻译单摆周期T＝2π(l/g)1/2 以及g=G/（R+h)^2 求,这两个公式的英文翻译

单摆周期：The peroid of a simple pendulum is T=2π(l/g)1/2 [T equals two pi multiply root square l over g]
The acceleration of gravity at a height of h is:
g=MG/（R+h)^2 [g equals the mass of earth M multiply gravitional constant G over square of R plus h]