Question

from a rectangular sheet of tin of size 120 cm by 100 cm are cut four squares of side 10 cm from each corner find the area of the remaining sheet​

Answer 1

Answer:

Area of the remaining sheet is 1.16 m²

Step-by-step explanation:

Given :

From a rectangular sheet of tin of size 120 cm by 100 cm are cut four squares of side 10 cm from each corner.

To find :

the area of the remaining sheet.

Solution :

If we remove the area of 4 squares which are cut from the area of the rectangular sheet, we'll get the area of the remaining sheet.

Area of rectangular sheet :

Length = 120 cm

Breadth = 100 cm

➙ Area = length × breadth

➙ Area = 120 cm × 100 cm

➙ Area = 12000 cm²

Area of one square :

Side = 10 cm

➙ Area = side × side

➙ Area = 10 cm × 10 cm

➙ Area = 100 cm²

Area of 4 squares :

➙ Area of 4 squares = 4 × 100 cm²

➙ Area of 4 squares = 400 cm²

Area of the remaining sheet :

➙ Area of the remaining sheet = Area of the rectangular sheet - Area of 4 squares

➙ Area of the remaining sheet = 12000 cm² - 400 cm²

➙ Area of the remaining sheet = 11600 cm²

➙ Area of the remaining sheet = 11600/10000 m²

➙ Area of the remaining sheet = 1.16 m²

Therefore,

Area of the remaining sheet = 1.16 m²

Answer 2

Step-by-step explanation:

$\huge\sf\underline\red{answer}$

$\huge\bf\underline{given,}$

length of the rectangle (l) = 120cm

breadth of the rectangle (b) = 100cm

side of the square(s) = 10cm

$\huge\fcolorbox{black}{pink}{solution}$

area of remaining sheet = area of rectangle-area of square

= (l×b)-4s²

= (120cm×100cm) - 4(10cm)²

= 12000cm² - 4(100cm²)

= 12000cm²-400cm²

= 11600cm²

.: area of remaining sheet = 11600cm² = 11.6m²