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The area of a rectangular shaped photo is 820 sq. cm. and its width is 20 cm. What is its length? Also find its perimeter.

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The area of a rectangular shaped photo is 820 sq. cm. and its width is 20 cm. What is its length? Also find its perimeter.

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Given Area = 820 cm²

Width = 20 cm

Area of the rectangle

= l × b sq. units

820 = l × 20

820/20 = l

41 = l

length l = 41 cm

Perimeter = 2(l + b) units

= 2(41 + 20) cm

= 2(61) cm

= 122 cm

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