Question

find the side of a square which has the same area as a rhombus of side 18 cm and height 4.5 cm

Answer 1

let the side of the square be x cm
area=side×side
area of rhombus=b×h=18×4.5=81
ATQ
since the area of rhombus is equal to area of square we have
${x}^{2} = 81 \\ x = \sqrt{81} = 9$
the side of the square is 9cm