PROBLEM & ANS - As a host of the party, you plan to give a jelly in a bowl shaped like a hemisphere of diameter 10 cm contains a cherry shaped like a sphere...

As a host of the party, you plan to give a jelly in a bowl shaped like a hemisphere of diameter 10 cm contains a cherry shaped like a sphere with a diameter of 1.5 cm and 3 cubes of 1-cm side nata de coco as a souvenir. If the bowl is filled to a depth of 4 cm, what is the volume of jelly it contains? How much jelly and nata de coco should be prepared if 315 guests will attend your party? [Hint: First, consider the case where the cherry and nata de coco is submerged, then the case where it is totally submerged]

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Tricks of using calculator - finding mean, standard deviation, variance

As a student who is learning mathematics, you are sure need to know how to make well use of CASIO calculator.

Today, I'm going to share with you some videos that can help you get the solution by using calculator within 3 minutes!

Apply these to solve your problems!

1. Finding mean of data

2. Finding standard deviation of data

2. Finding variance of data

 variance is power 2 of standard deviation

Enjoy!