220 square cm
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.
12
Let the width be x: 2(length+width) = perimeter 2(20+x) = 50 40+2x = 50 2x = 50 -40 2x = 10 x = 5 centimeters Check: 5+5+20+20 = 50 centimeters
21cm3
11*20=220 cm2
The width of the rectangle is 4 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
220 square cm
30 ft
A = L x W 20 = 10 x W 20/10 = W 2 = W
To find the area of a rectangle, multiply the length by the width. In the case of a 5 cm by 4 cm rectangle, the area would be 20 square centimeters.
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.
12
the answer to number 20 is B...12