Question

A wooden door,2 m 8 cm high and 1.2m wide has 4 glass panes fitted on it. each pane is 40 cm by 20 cm. what is the area of the wood

Answer 1

area of wood = area of door - area of 4 panes
=2×8×1.2-4×0.40×0.20
=19.2 - 0.08
=18.4