+0

# Help

0
68
2

Work out the base of a square with area, A = 225cm2.

Guest Oct 3, 2018

#1
+3148
+1

really....

$$A = s^2 \\ 225 = s^2 \\ s = \pm \sqrt{225} \\ s = \pm 15 \\ \text{negative lengths don't make sense}\\ s = 15$$

Rom  Oct 3, 2018
#1
+3148
+1

really....

$$A = s^2 \\ 225 = s^2 \\ s = \pm \sqrt{225} \\ s = \pm 15 \\ \text{negative lengths don't make sense}\\ s = 15$$

Rom  Oct 3, 2018
#2
0

Work out the area of a rectangle with base, b = 18mm and perimeter, P = 50mm.

Guest Oct 3, 2018