lebronjames62161
lebronjames62161
19-05-2021
Mathematics
contestada
Please help me thanks please
Respuesta :
nosrat2104
nosrat2104
19-05-2021
Answer : 45 centimeters
Explanation: 756 = ((a+b)/2)h
756 = ((39+b)/2)18
756/18 = (39+b)/2
42= (39+b)/2
2(42) = 39 + b
84 = 39+b
84-39=b
45=b
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