The sum of two adjacent sides is 11 inches, so the long sides are 9 inches. The "unknown number" must be 12.
To find the percentage of a number, you take the percent - 5% - and change it to a decimal by moving the percent over 2 times to the left and multiplying it by the number. So...
.05 x 63
= 3.15
Answer: 5% of 63 is 3.15
The truck now weighs 2130 kilograms. Hope this helps.
Answer:
it is a it the first one. 7/13
