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What is the length and width of a rectangle if the perimeter is 18cm?
It is impossible to say. Let L be ANY number such that 4.5 ≤ L < 9 cm and let B = (9 - L) cm. Then for every one of the infinite number of values of L, there will be a different rectangle whose perimeter will be 18 cm.
What are the dimensions of a rectangle if the perimeter is seventy eight centimeters?
There are infinitely many possible answers. Select any number, B, in the interval (0, 19.5) cm or allow 19.5 cm if a square is permitted. Let L = 39 - B cm. Then the perimeter of an L*B rectangle is2*(L + B) = 2*(39 - B + B) = 2*39 = 78 cm.Since the choice of B is arbitraty within that interval, there are infinitely many possible values for B and thus, infinitely many possible dimensions.
Describe the locus of points that are 9 cm from point B?
a circle 9 cm from point b I was co fused by this but you just do a diagram and write this
Rectangular with a perimeter of 9 cm?
There are infinitely many possible rectangles. Suppose A >= 2.25 cm is the length of the rectangle. and B = 4.5 - A cm is the width. Then perimeter = 2*(A + B) = 2*(A + 4.5 - A) = 2*4.5 = 9 cm Also, it is easy to show that A >=B so that A and B cannot swap places. For each of the infinitely many values of A, you have a rectangle with perimeter 9 cm.
How many rectangles have the perimeter of 24cm?
Infinitely many. Let B be any number less than 6 cm, and let L = 12-B cm. Then the perimeter of the rectangle, with length L and breadth B, is 2*[L+B] = 2*[(12-B)+B] = 2*12 = 24 cm. There are infinitely many possible values for B, between 0 and 6 and so there are infinitely many possible rectangles.
