The area of a rectangle inceased by 57 cm2 when each by 3cm. 

The perimeter of the origial rectangle is..................cm

the perimeter of a rectangle is 130cm. If its width is increased by 15cm then it' II be a square. the area of this rectangle is ... cm2

The perimeter of a rectangle is 34 cm. If its length is increasing 5 cm and its width is increasing 3 cm then the area is increasing 80 . Find the original area of the rectangle.
Answer: The original area of the rectangle is  ........ cm²

The perimeter of a rectangle is 34 cm. If its length is increasing 5 cm and its width is increasing 3 cm then the area is increasing 80cm² . Find the original area of the rectangle.
Answer: The original area of the rectangle is ....... cm².

the area of rectangle increased 57 cm2 when each side increases by 3cm . The perimeter of the origial rectangle is bao nhieu ?????

:
The semiperimeter of a rectangle is 12cm. The length is 4cm longer than the width. What is its area?
(the semiperimeter of a rectangle is half its perimeter)
Answer: Its area is  ......

A square of side 8cm has the same perimeter as a rectangle. If the ratio of the width of the rectangle to its length is 1:3 then its area is ...cm2?

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The diagonals of a rectangle enclose an angle of measure . If the perimeter of the rectangle is , what is its area?

A 72,1

B 77,9

C 80,1

D 82

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The diagonals of a rectangle enclose an angle of measure 78o . If the perimeter of the rectangle is 36 , what is its area?

A 72,1

B 77,9

C 80,1

D 82

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