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Q: What is the area of a 20 centimeters by 12 centimeters rectangle?

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21cm3

11*20=220 cm2

The width of the rectangle is 4 cm

30 ft

220 square cm

The perimeter of a rectangle is 2length +2 width. the width is x the length is x+4. Plug into the equation 2(x)+2 (x+4)=20 2x+2x+8=20 4x=12 x=3 The width is 3 the length is 7 (3+4) Area is length times width. 3(7)= 21. the area is 21 centimeters

12

A = L x W 20 = 10 x W 20/10 = W 2 = W

The perimeter of a rectangle measuring 20x45 centimeters is (2*20) + (2*45) = 40 + 90 = 130 cm

Assuming the cookie sheet to be a rectangle, and 12 and 20 inches are the dimensions of the sheet, the area of the rectangle is s1s2. Plugging in the values yield 12(20) = 240 square inches.

the answer to number 20 is B...12

6cm. The perimeter of the rectangle has to add to 20. 4+4+6+6=20 Hope this helps ;-)

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