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.
Answerfirst you have to make it a square by subtracting 2cms from the length and adding 2cms to the width. That will make it equal to 12cm. The area for the rectangle was 140cm then it increased by 4 because 12cm * 12cm is 144cm. so x = 2 and the area increases by four.