Question

one diagonal of a rectangle is of lebgth 4 ratio 5 then length of another diagonal is​

Answer 1

You can use the Pythagorean theorem to estimate the diagonal of a rectangle, which can be expressed with the following formula: d² = l² + w² , and now you should know how to find the diagonal of a rectangle explicit formula - just take a square root: d = √(l² + w²) .