Old side = x
(x + 3)2 = 2x2
x2 + 6x + 9 = 2x2
6x + 9 = x2
x2 - 6x - 9 = 0
x = 7.245
Old area 52.49 sq cm ( new = 10.2452) = 104.96. Near enough!
2a2+2a2 = 4a2
No. You could, for example, have a square and a rhombus with sides twice as large.
2X + 3
There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).
164
2a2+2a2 = 4a2
The lengths are 6.25 and 12.5 metres.
2(3 + x + x2)
No. You could, for example, have a square and a rhombus with sides twice as large.
Both the side lengths and the perimeter are linear measurements, therefore they are proportional. In other words, twice the side length results in twice the perimeter.
49+2x
40 + 2n
The Indian state that is approximately twice the size of Sikkim is Tripura. Sikkim has an area of about 7,096 square kilometers, while Tripura covers around 10,491 square kilometers. This makes Tripura significantly larger than Sikkim, almost one and a half times its size.
2X + 3
There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).
164
twice the size of ten square miles!