Question

GIVE EXPRESSION:
a. Let y be Anuja's present age. How old was anuja 4 years ago?
b. The side of a square table is denoted by b cm. Express the area of square in terms of b?

I WANT EXPLAINED ANSWER.
PLEASE ANSWER only if you know. ​

Answer 1

Answer :-

• a) Expression -: y - 4 years.
• b) b cm × b cm.

Step-by-step explanation :-

a. In this question, we have taken Anuja's present age as y. We have to find out how old she was 4 years ago. For this, we simply have to subtract 4 from her present age, and that will be her age 4 years ago$.$

Since her present age is y,

Therefore, her age 4 years ago will be y - 4.

b) In this question, the side of a square table is denoted by b cm. It's clear that a square table will be in the shape of a square. So, for finding the answer. We first have to know the formula required for finding the area of a square, and then we can find the answer using it.

Area of a square = Side × Side.

Since the side of the square table is denoted by b cm,

Therefore the area of the square table will be b cm × b cm.

-----------------------------------------------------------

Additional information :-

Here is some extra information for your knowledge!

Given below are some more examples with questions :-

1) Right now, my present age is x years. What will be my age after 10 years?

In the question, the present age has been taken as x years. We have to find the age after 10 years. For this, we simply have to add 10 to the present age for finding the age after 10 years.

Since the present age is x years,

Therefore the age after 10 years = x + 10 years.

2) y chocolates are to be divided into 5 children. What will be the expression for this?

In this question, the number of chocolates is taken as y. We have to divide them into 5 children. For this, we simply have to divide the number of chocolates by 5, to find the answer.

Since the number of chocolates is y,

Therefore the required expression is x ÷ 10 or $\sf \dfrac{x}{10}$.

-----------------------------------------------------------

Answer 2

a) Let Anuja's present age be = y

4 years ago Anuja's age = y - 4

b) The side of a square table = b cm

Area of a square = side × side

= b × b

= b² cm²