Question

A newborn bear weighs 4kg. how many kilograms might a five-year-old bear weight if its weight increased by the power of $2$ in $5$ years?

Answer 1

Hint: First we have to define what the terms we need to solve the problem are.
Since the given question asks us to find the kilograms of the bear after five years in terms of using the power of $2$. So, we will first see what is the power of $2$, which is the number that can be written as in the form of square or cube, etc., like the numbers that are obtained by multiplying any whole number twice or thrice, etc., …

Complete step-by-step solution:
Since as per the given question the weight of the newborn bear is four kilograms. And we need to find how many kilograms of weight(bear) after five years by using the increase as the power two in five years. (since the weight has increased, we got the answer in terms of a positive number also greater than four).
Now we find after five years old bear, that means the weight of the bear at the present rate is ${4^2}$ (four power two) is also called as the square of the number four
Hence weight increased by the power of $2$ in $5$ years (kilograms) old bear weight is $16$ because four square or four power two is sixteen and hence $16$ is the required answer.

Note: we are also able to solve this problem by using the simple multiplication technique; since after five years (the power of two) for the bear weight (four) is the requirement. That means four into the four-time gives the result as sixteen $4 \times 4 = 16$(power of two can be written as the $4 \times 4$)
Suppose after $5$years the bear increased rate is power $3$ means we get ${4^3} = 64$($4 \times 4 \times 4$)