0
The area can't exactly be determined here since we don't have enough information about the sides of the rectangles! We only know that the perimeter of the rectangle is 42 cm. Then:
P = 2(l + w) where l is the length and w is the width.
42 = 2(l + w)
21 = l + w
Solve for either w or l to get...
w = 21 - l
So by the area of the rectangle, we obtain:
A = lw
A = l(21 - l)
= 21l - l²
So we can't really determine the area of the rectangle. It's just the general form of the rectangle with the perimeter 42 cm.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is the square footage of 42 inches x 48 inches?
42 inches = 3.5 feet48 inches = 4 feetThe area of a rectangle that measures (42" by 48") is (3.5 x 4) = 14 square feet.
The length of a rectangle is 5 cm what is its width?
42
A Rectangle has an area of 42 square feet If its length is 5 feet more than twice its width what are the dimensions of the rectangle?
Name the length x & the width ythen, x = 5 + 2yknowing that the area of the rectangle is obtained from the multiplication of its length times its width ,then:x * y = 42(5 + 2y)*y = 425y + 2y^2 = 422y^2 + 5y - 42 = 0solving the above equation you'll obtain these two values for x :y = 3.5 which is adopted (as it's a positive value)y = -6 which is rejected as a length due to its minus sign.Now,solve for x:x = 5 + 2yx = 5 + 2(3.5)x = 12Conclusion:The length of the rectangle is equal to 12 feet &its width is equal to 3.5 feet.
Three consecutive number whose sum is 126?
The numbers are 41, 42 and 43.
Find three consecutive numbers whose sum is 126?
41, 42, 43
A rectangle has perimiter 84 ft you also know that the length of the rectangle is six times of the width find the area of this rectangle?
L + W = P/2 = 42 ft. 1/7th of 42 is 6 so L = 36 and W = 6 making the area 216 sqft.
How wide is the rectangle the area of the rectangle is 42 the rectangle is 7 inches how wide is the rectangle?
The area of Joseph’s rectangular homework desk is 1,008 square inches. If the length of his desk is 42 inches, how wide is his desk?
What is the area of a 6 by 7 rectangle?
42 square units
What the area of a rectangle with length 6 inches and width 7 inches?
Area of rectangle: 6 times 7 = 42 square inches
What is the area of 273 times 42?
11466, but if it is a rectangle with units 11466cm2
The perimeter of a rectangle is 26 units. What is the greatest possible area of the rectangle in square units?
42 square units.
What is the area of a 600 centimeters by 700 centimeters rectangle?
42 square meters
Is there a rectangle with a perimeter of 26cm and area of 42 cm?
Try a rectangle with dimensions of 6 cm and 7 cm, and see what you get.
What is the perimeter of a rectangle with sides of 9 cm and 12 cm?
Since there are two of each side, there are two 9s and two 12s, so the perimiter is 2*12+2*9, which is 24+18, which is 42.
How do you find the area and perimeter of 42 centimeters wide and 14 centimeters?
Assuming that it's a rectangle then:- Area = 42*14 = 588 square cm Perimeter = 42+42+14+14 = 112 cm
A rectangle has an area of 42 square inches.which has a greater perimeterthe rectangle with the dimensions x or the dimensions x?
There is no limit to the size of the perimeter.
What is the dimensions of a rectangle with a perimeter of 34 inches and an area of 42 inches squared?
The dimensions of the rectangle are 3 inches by 14 inches
