This is just the perimeter so add all of the numbers up. 4.2 + 9.4 + 4.6 + 5.6 = 23.8.
Multiply 23.8 by 7.4 to convert it to meters. 23.8 X 7.4 =171.36
A cheap way to go about it is, use the LCD and multiply both sides by it.
now, notice the denominators, x, 4, 4x, clearly the LCD is 4x, so let's multiply both sides by that, to do away with the denominators,
Answer:
63
Step-by-step explanation:
Make a ratio:
5 : 7 = 45 : x
x = 63