Answer:
3 + 3 + 4.2 = 10.2 perimeter
3 x 3 = 9, 9 divided by 2 = 4.5 is area
3 + 3 + 3 + 3 = 12 is perimeter (all sides are the same length since its a square)
3 x 3 = 9 is area
3 + 3 + 4.2 + 4.2 = 14.4 is your perimeter
3 x 2.9 = 8.7 is your area
6 + 6 + 8.5 = 20.5 is your perimeter
We need to find the height using the hypotenuse formula:
Half of 8.5 = 4.25
4.25^2 + 6^2 = 54.0625
Square root of 54.0625 is around 7.35
Now let's find the area:
8.5 x 7.35 x 1/2(basically just dividing by 2) = 31.2375 rounded = 31.24 is your area
