Question

A sheet of paper measures 30cm by 20cm.a strip 5cm wide is cut from it all around.find the area of the remaining sheet and the strip cut out.​

Answer 1

Given :-

Dimensions of the Sheet :

• Length = 30cm
• Breadth = 20cm
• Wide of Cutted Strip = 5cm

To Find :-

• The area of the remaining sheet and the strip cut out.

Solution :-

★ Area of the Sheet ★

➞ Area of the Sheet = Length × Breadth

➞ Area of the Sheet = 30 × 20

➞ Area of the Sheet = 600cm²

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★ Area of the Remaining Sheet ★

➞ Length of Remained part = 30 - 5 + 5

➞ Length of Remained part = 30 - 10

➞ Length of Remained part = 20cm

➞ Breadth of Remained part = 20 - 5 + 5

➞ Breadth of Remained part = 20 - 10

➞ Breadth of Remained part = 10cm

➞ Area of Remained part = L × B

➞ Area of Remained part = 20 × 10

➞ Area of Remained part = 200cm²

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★ Area of the cutted Strip ★

➞ Area = sheet's area - Remained area

➞ Area = 600 - 200

➞ Area of the Strip = 400cm²

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Therefore, Area of the Remaining part = 200cm² and Area of the Strip = 400cm²

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