Which is the closest to the surface area of a cone with a slant height of 13cm and a radius of 5cm A.266.9 B.282.6 C.314.0 D.942.0 15 plus brainliest for anybody who answer asap

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?