Answer:
the answer is 36
Step-by-step explanation:
beacuse if we use the pythagorean theorem for 9 and 12 we get 15 which means that the perimeter is P=9+15+12=36
The answer for number 6 is 17.
2nd one
A≈166.28cm²
Using the formulas
A=33
2a2
P=6a
A=3P2
24=3·482
24≈166.27688cm²
