Question

Find the area of a rectangular blackboard whose length and width are 120 cm and 100 cm .

Answer 1

Answer:

Given

LENGTH=120 cm

breadth=100 cm

area=l*b

area=120*100

area=12000cm^2

Answer 2

Answer:

The area of a rectangular blackboard is $12000cm^2.$

Step-by-step explanation:

As per the data given in the above question,

Given that:-

The length of a rectangle = $120cm$

The breadth of a rectangle = $100cm$

We have to find the area of a rectangular blackboard,

A rectangle is a four-sided two-dimensional plane figure.

The rectangle is a type of parallelogram that has all of its angles equal.

The area of a rectangle is calculated by multiplying the length and breadth of a rectangle.

Here we have to use the formula of the area of a rectangle,

i.e., $A = l\times b$

Where, l = length  

            b = breadth

Given:- l = $120cm$ and b = $100cm$

Substitute the given values of length and breadth in the above formula we get,

$A = 120\times 100$

Multiplying $120$ by $100$, we get

$A = 12000cm^2$

Hence, the required solution is $12000cm^2.$