Please help I need this done in a hour I will give brainleast and please don’t steal points if I fail this I will fail so please someone do it for me I don’t understand this

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

Ten times the square of a non-zero number is eqaul to ninety times the number

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?