Well, we could multiply it as 14 times 6. When you multiply any number that has a zero at the end of it, you would pretend a zero wasn't there, (like how in this problem 60 becomes 6), and add the zero at the end of your answer instead :3. When you're multiplying any number that has DECIMALS in it, you would multiply as if it's a regular number, (like how in this problem 0.14 becomes 14), and move the decimal, (EVERY number has a decimal. For those numbers that don't SHOW a decimal, there's an "invisible" one at the end of the number which you use when multiplying with decimals. For example, 2.2 times 4 -----> 4's "invisible" decimal is 4.0, so this problem becomes 22 times 4, which is 88, and since the decimal in 2.2 is one place to the left, we'll move the "invisible" decimal of 88 one place to the left, so the answer is 8.8! :3), so let's multiply 14 times 6. 14 times 6 = 84, which now we can add the zero from 60 in it so the answer becomes 840, and now since the decimal in 0.14 is TWO places to the left, we'll move 840's decimal two places to the left, so your final answer would be 8.40, or also known as 8.4 ;3
Since they are similar both dimensions would have the same ratio. The ratio of 5 and 15 is 3. 15 is 3 times larger than 5, so the unknown dimension is 3 times larger than the known dimension.
