Karen Morrison and Nick Hamshaw Solutions for Exercise 2: Exercise 2.2

The formula for finding the perimeter of a rectangle is $P=2\left(l+b\right)$, where $l$ represents the length and $b$ represents the breadth of the rectangle. Find the perimeter of the rectangle, if the length is $2.5 \mathrm{m}$ and breadth is $1.5 \mathrm{cm}$.

The formula for finding the perimeter of a rectangle is $P=2\left(l+b\right)$, where $l$ represents the length and $b$ represents the breadth of the rectangle. Find the perimeter of the rectangle, if the length is $20 \mathrm{cm}$ and the breadth is half as long.

The formula for finding the perimeter of a rectangle is $P=2\left(l+b\right)$, where $l$ represents the length and $b$ represents the breadth of the rectangle. Find the perimeter of the rectangle, if the breadth is $2 \mathrm{cm}$ and the length is the cube of the breadth.

Find the value of the expression $n^2+n+41$, when $n=1$.

Find the value of the expression $n^2+n+41$, when $n=3$.

Find the value of the expression $n^2+n+41$, when $n=5$.

Find the value of the expression $n^2+n+41$, when $n=10$.

Find the value of the expression $n^2+n+41$, when $n=41$.