Question

Find the area of shaded portion (measurements are in cm)

please answer soon step by step explanation please​

Answer 1

$\bold{\underline{☘Explanation}}$

First let's find the total area

$\rightarrow$ Area of rectangle = length × breadth

$\rightarrow$ 40 × 20

$\rightarrow$ 800 cm²

Total area = 800 cm²

Now we will find the area of inner rectangle

$\rightarrow$ 10 × 25

$\rightarrow$ 250 cm ²

To find the area of shaded portion we need to subtract the area of inner rectangle from the total area

$\rightarrow$ 800 cm ² - 250 cm ²

$\rightarrow$ 550 cm ²

$\fbox\red{Hence \: the \: area \: of \: the \: shaded \: portion \: = \: 550cm²}$

Answer 2

Answer:

Given,

Length of big Rectangle (L) = 40cm

Breadth of big Rectangle (B) = 20cm

Length of small Rectangle (l) = 25cm

Breadth of small Rectangle (b) = 10cm

To Find :-

Area of shaded region.

Let's understand :-

To find area of shaded region We need to subtract area of big Rectangle - area of small Rectangle.

Formula Used :-

Area of Rectangle = Length$\sf\times$Breadth

Solution :-

Area of big Rectangle = L$\sf\times$B

$= 40cm \times 20cm$

$= 800 {cm}^{2}$

$\sf\therefore Area\: of\: Big\: Rectangle = 800cm^{2}$

Area of small Rectangle = l$\sf\times$b

$= 25cm \times 10cm$

$= 250 {cm}^{2}$

$\sf\therefore Area\: of\: small\: Rectangle = 250cm^{2}$

Area of shaded region = Area of big Rectangle - Area of small Rectangle

$= 800 {cm}^{2} - 250 {cm}^{2}$

$= 550 {cm}^{2}$

$\sf\therefore Area\: of\: shaded\: region = 550cm^{2}$