Aworker takes a random sample of 290 bolts and finds that 29 of them are either too long or too short, thus making them unusable. estimate the number of unusable bolts in a production of 20,000 bolts.

An advertisement is on a flyer that has a thickness of 8.2 × 10-5 meters. each measurement below is the thickness of a stack of flyers. drag each measurement to the correct stack.

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?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?