Arihant Expert Team Solutions for Exercise 1: Practice Questions

If the edge of a cube is increased by $100\%$, then the surface area of the cube is increased by _____.

The area of the shaded region in the given figure is:

A street of width $10 m$ surrounds from outside a rectangular garden whose measurement is $200 m\times 180 m$. The area of the path (in $sq. m$) is _____.

The length of the three sides of a right angled triangle are $\left(x-2\right) cm, x cm$ and $\left(x+2\right) cm$, respectively. Then, the value of $x$ is _____.

The number of spherical bullets that can be made out of a solid cube of lead whose edge measures $44 cm$, each bullet being of $4 cm$ diameter is (take $\pi =\frac{22}{7}$) _____.

The lengths of two sides of an isosceles triangle are $15$ and $22$ respectively. What are the possible values of perimeter?

A semi-circular shaped window has diameter of $63 cm$. Its perimeter equals to $\left(\mathrm{\pi }=\frac{22}{7}\right)$ _____.

The length of longest pole that can be placed in a room of $12 m$ long, $8 m$ broad and $9 m$ high is _____.