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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation 900×30×(399.1-15)+4×30×(399.1-30)×(399.1-30)/2 .
Question type: Mathematical calculation
Solution:
900×30×(399.1-15)+4×30×(399.1-30)×(399.1-30)/2
=900×30×384.1+4×30×(399.1-30)×(399.1-30)/2
=900×30×384.1+4×30×369.1×(399.1-30)/2
=900×30×384.1+4×30×369.1×369.1/2
=27000×384.1+4×30×369.1×369.1/2
=10370700+4×30×369.1×369.1/2
=10370700+120×369.1×369.1/2
=10370700+44292×369.1/2
=10370700+16348177.2/2
=10370700+8174088.6
=18544788.6
Answer:900×30×(399.1-15)+4×30×(399.1-30)×(399.1-30)/2=18544788.6
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation 900×30×(399.1-15)+4×30×(399.1-30)×(399.1-30)/2 .
Question type: Mathematical calculation
Solution:
900×30×(399.1-15)+4×30×(399.1-30)×(399.1-30)/2
=900×30×384.1+4×30×(399.1-30)×(399.1-30)/2
=900×30×384.1+4×30×369.1×(399.1-30)/2
=900×30×384.1+4×30×369.1×369.1/2
=27000×384.1+4×30×369.1×369.1/2
=10370700+4×30×369.1×369.1/2
=10370700+120×369.1×369.1/2
=10370700+44292×369.1/2
=10370700+16348177.2/2
=10370700+8174088.6
=18544788.6
Answer:900×30×(399.1-15)+4×30×(399.1-30)×(399.1-30)/2=18544788.6