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49 + c units

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Q: Perimeter of a triangle where a equals 21 b equals 28 c equals?
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What times 21 equals 84?

28*21 equals 84


The legs of a right triangle are 21 and 28 inches long What is the area of the triangle?

Area = 0.5*21*28 = 294 square inches


What is 28 times 21?

28 times 21 equals 588.


The legs of a right triangle are 21 and 28 inches long respectively. What is the area of the triangle?

Area = 0.5*21*28 = 294 square inches


Is 21 28 35 right triangle?

Yes


What mistake was made in this equation 3x plus 7 equals -4x plus 28 -x plus 7 equals 28 -x equals 21 x equals -21?

3x + 7 = -4x + 28 implies 7x + 7 = 28


What is the answer of 4a-7 equals 21?

21 + 7 = 28 28 / 4 = 7 Your answer is 7.


The legs of a right triangle are 21 and 28 inches long respectively What is the area of the triangle?

294 in^2


The legs of a right triangle are 21 and 28 inches long what is the are of the triangle?

The area is 294 square inches.


The length of the sides of a triangle are consecutive even numbers find the length of the longest side if it is 22 units shorter than the perimeter?

Let the length of the longest side of the triangle be x units.Since the lengths of the sides of the triangle are consecutive even numbers, which differ by 2, the perimeter of the triangle equals to (x - 4) + (x - 2) + x = 3x - 6.Since the length of the longest side is 22 units shorter than the perimeter, the perimeter of the triangle also equals to x + 22. So that3x - 6 = x + 22 (subtract x and add 6 to both sides)3x - x + 6 - 6 = x - x + 6 + 222x = 28 (divide both sides by 2)x = 14Thus the longest side has a length of 14 units.


What is 3a-7 equals -28?

3a - 7 = -28 Therefore, 3a = -21 a = -21/3 Therefore, a = -7


Which has a greater perimeter a 28 inch square or a 21 inch by 31 inch rectangle?

28 inch square