Question

The perimeter of a rectangular sheet is 100cm. if the length is 35cm,find its breadth. Also find the area​

Answer 1

If the length is 35 cm, find its breadth. Also find the area. Length of rectangular ... Ex 11.1, 4 - Chapter 11 Class 7 Perimeter and Area. Last updated at Dec...

Answer 2

Answer:

Given :-

• The perimeter of a rectangular sheet is 100 cm and the length is 35.

To Find :-

• What is the breadth and the area.

Formula Used :-

✯ Perimeter of rectangle = 2(L + B) ✯

★ Area of rectangle = L × B ★

where,

• L = Length
• B = Breadth

Solution :-

➦ To find breadth,

Given :

• Perimeter = 100 cm
• Length = 35

According to the question by using the formula we get,

⇒ 2(35 + B) = 100

⇒ 70 + 2B = 100

⇒ 2B = 100 - 70

⇒ 2B = 30

⇒ B = 30/2

➠ B = 15 cm

∴ The breadth of a rectangular sheet is 15 cm .

➦ To find area,

Given :

• Length = 35 cm
• Breadth = 15 cm

According to the question by using the formula we get,

↦ Area = 35 cm × 15 cm

➠ Area = 525 cm²

∴ The area of a rectangular sheet is 525 cm² .