calculate lower and upper bound for the following calculations if each of the number is given to 1 decimal point

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles