from openpyxl import Workbook
import openpyxl

file = "areas.xlsx"
wb = openpyxl.load_workbook(file, read_only=True)
ws = wb.active

for row in ws.iter_rows("A"):
    for cell in row:
        if cell.value == 0.345:
            print(ws.cell(row=cell.row, column=2).value)