1 centimeter =10 millimeters 
10x3=30millimeters 
30+47=77 millimeters 
Hope that helps :).
        
             
        
        
        
25 >= m
m is the money that Jack can spend.
when i put ">=" i meant greater than or equal to.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Lateral surface area of the triangular prism = Perimeter of the triangular base × Height
By applying Pythagoras theorem in ΔABC,
AC² = AB² + BC²
(34)² = (16)² + BC²
BC = 
      = 
      = 30 in.
Perimeter of the triangular base = AB + BC + AC
                                                       = 16 + 30 + 34
                                                       = 80 in
Lateral surface area = 80 × 22
                                   = 1760 in²
Total Surface area = Lateral surface area + 2(Surface area of the triangular base)
Surface area of the triangular base = 
                                                            = 
                                                            = 240 in²
Total surface area = 1760 + 2(240)
                                = 1760 + 480
                                = 2240 in²
Volume = Area of the triangular base × Height
              = 240 × 20
              = 4800 in³
 
        
             
        
        
        
Answer:
 A is
Step-by-step explanation: