Answer:
13) 13.7 14) 78.3 cm
Step-by-step explanation:
13) 6²+x²=15²
x = 13.7
14) 2πr/2 = 2(3.14)(5.5)/2 = 17.3
25 + 11 + 25 + 17.3 = 78.3 cm
