8th Class
Mathematics
Algebraic Expressions
Question Bank
Algebraic Expressions and Identities
question_answer
Given that \[T=\frac{2\,\pi \,l}{\sqrt{{{l}^{2}}+{{g}^{2}}}},\] find the value of T if \[\pi =3.142,\,\,\,l=7.89\] and \[g=9.81\], (Give your answer correct to 3 significant figures.)