If the ratio of areas of two squares is $225: 256,$ then the ratio of their perimeters is

If half the diagonal of a square is $5 \, cm$,then the area of the square is

The adjacent sides of a parallelogram are $8\, m$ and $5\, m$. The distance between the longer sides is $4\, m$. The distance between the shorter sides is......$m$.

The number of marble slabs of size $20 \text{ cm} \times 30 \text{ cm}$ required to pave the floor of a square room of side $3 \text{ m}$ is:

The area of a square is $1444 \ m^2$. The breadth of a rectangle is $\frac{1}{4}$ of the side of the square and the length of the rectangle is thrice its breadth. What is the difference between the area of the square and the area of the rectangle? (in $m^2$)

$A$ typist uses a sheet measuring $20\, cm \times 30\, cm$ lengthwise. If a margin of $2\, cm$ is left on each side and a $3\, cm$ margin on top and bottom,the percent of the page used for typing is