Ive got a big maths test tomorrow ask me questions on fractions or percentages , formula , significant figures , Pythagoras anyt
1 answer:
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Answer:
The mass of the bag of sand must be equal to
Step-by-step explanation:
<u><em>The complete question is</em></u>
In the opening scene of the movie Raiders of the Lost Ark, Indiana Jones replaces a golden statue with a bag of sand. The platform on which the statue is placed is designed to detect the mass of the statue. If the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues.
The density of gold is about 20 g/ cm^3 . The density of sand can be estimated at 2.5 g/cm^3. The gold statue can be modeled as a cylinder with height 25 cm and radius 8 cm.
In terms of pi, what is the mass of sand Indiana Jones needs to avoid triggering the mechanism?
step 1
Find the volume of the gold statue
The volume of a cylinder is equal to
substitute the given values
step 2
Find the mass of gold
Remember that the mass is equal to multiply the density by the volume
so
step 3
what is the mass of sand Indiana Jones needs to avoid triggering the mechanism?
we know that
The mass of the bah of sand must be equal to the mass of the statue
therefore
The mass of the bag of sand must be equal to
The picture shows how I set the problem up and worked it out
