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