Question

Find the area of a square the length of whose diagonal is 2.9 meters.

Answer 1

...Find the area of a square whose diagonal is 2.9 meters.

I code

square ABCD, diagonal AC, right triangle ADC

AC²=AD²+DC²

2.9²=2AD²

8.41 =2AD²

AD²= 8.41/2=4.205

Square area =AD²=4.205cm²