8.485 cm (rounded)
The length of the other diagonal works out as 12cm
Using Pythagoras; theorem it is 12 times square root of 2 which is about 17 cm rounded to the nearest integer
15 cm Solved through Pythagoras' theorem.
Volume = 960 cm3
Easiest thing to do here would be to draw a diagram and label the sides with their lengths and draw a line for the diagonal. You can see the diagonal forms part of a right-angled triangle, with its shorter lengths 35 cm and 12 cm. So using Pythagoras's Theorem, x2 = 352 + 122 = 1369 x = square root of 1369 = 37 cm.
Each side of the square will have a length of 12cm and its area is 12*12 = 144 square cm
12cm x 12cm
Area of the rectangle is 144cm. The sides of a square with the same ares is 12cm.
area = length x width area = 12 x 10 = 120 square cm
Because all sides of a square are equal in length, this can be calculated using division: 48cm / 4 sides = 12cm
A square with an area of 144cm2 has sides of 12cm which is the square root of 144cm. 12cm x 12cm gives 144cm2.
12cm is not uncommon.