Ay yo im bored can someone come over cuz XDXDXD

What is the square root of 45? (step by step working plz)

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.