I have to find the area of a semicircle and round to the nearest hundredth. The diameter of the full circle is 2ft, if anyone could answer quickly I would greatly appreciate it

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?