Question

A rectangle is 12 cm long and 5 cm wide.
Work out the length of a diagonal of the rectangle.​

Answer 1

diagonal=13cm

Explanation:

a² + b²=c²

(12cm)² + (5cm)²=c²

144cm² + 25cm²=c²

169cm²=c²

√169cm²=√c²

13cm=c