Help me Give the approximate measurement of the following objects by using the appropriate

measuring tool:

1) Length of the blackboard

2) Weight of a pineapple

3) Weight of 5 notebooks

4) Length of the door

5) Volume of used mineral water​

If the measure of xyz is 81 what is the measure of yz

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

This figure consists of a rectangle and semicircle. what is the perimeter of this figure use 3.14 for pi 60.84m 72.84m 79.68m 98.52m