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3 years ago

How to find volume of 7 and 8? (20 pts)

Mathematics

1 answer:

Airida [17]3 years ago

7 0

Answer:

Step-by-step explanation:

7.base of triangle=√(32.5²-28²)

=√4.5(32.5+28)

=√4.5(60.5)

=√272.25

=16.5

area of triangle=1/2 ×16.5×28

=231

volume=231×31=7161 km³

39.4-25=14.4

width=√(30.6²-14.4²)

=√16.2(30.6+14.4)

=√16.2(45)

=√729

=27

volume=(25+39.4)/2 ×27×35

=(64.4)/2×27×35

=32.2×27×35

=30429 cm³

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