You can use this one app it’s called Cymath it’s really helpful with these types of problems,
Step-by-step explanation:
3+√5+3√5+5
=6√5+5
=6√10
(4/7) / (3/-8)...when dividing fractions, flip what u r dividing by, then multiply
4/7 * - 8/3 =
- 32/21 <===
Answer:
A = pi * r^2 = pi * 5^2 = 25*pi = 78.54 in²