<span>the dimensions of a door are variable, for effects of this problem we will assume a door height of 210 cm and a door width of 80 cm
Step 1 </span><span>convert the dimensions of the door in cm to inches </span>we know that 1 in-------------> 2.54 cm X----------------> 210 cm X=210/2.54=82.67 in (height)
1 in-------------> 2.54 cm X----------------> 80 cm X=80/2.54=31.50 in (width)
the dimensions of a door are 31.50 in x 82.67 in
Step 2 calculate the amount of rules of 12-inches necessary to measure the height of the door 82.67 in (height) if one rule-------------> measure 12 in X----------------------> 82.67 in X=82.67/12=6.8-----------> 7 rules
Step 3 calculate the amount of rules of 12-inches necessary to measure the width of the door 31.50 in (width) if one rule-------------> measure 12 in X----------------------> 31.50 in X=31.50/12=6.8-----------> 2.62 ------------> 3 rules
the answer is to measure a door are needed about 7 rules of 12-inches for the height and about 3 rules of 12-inches for the width
The context suggests that they want you to label the intersect point of the two circles above c as e and compare the length between those two and the line between a and d
