blondie02

21.07.2019 • 

Mathematics

1. a pyramid has a base area of 10in^2 and a height of 3.09 in. what is the volume of the pyramid? 2. a cylinder has a diameter of 14ft. and a height of 10 ft. what is the volume of the cylinder 3. which of the following is the best approximation of the volume of a sphere with a 7 cm. radius. a.1744 cm^3 b.1436 cm^3 c.615 cm^3 d.462 cm^3 4. the volume of a sphere is 4/3 pie cm^3. what is the diameter of the sphere? 5. the volumes of two similar solids are 20 cm^3 and 540^3. which is the ratio of the corresponding sides of the larger figure to the smaller figure.

Ответ:

shelbyhood8329

01.06.2020

Mathematics

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1.
 V=1/3*b*h=1/3*10*3.09=1.03*10=10.3 in³

2.
V=b*h
b=πr²
r=d/2=14/2=7ft
V=πr²*h
V=π*7²*10=490π ft³
If it should be approximate V≈1539.38 ft³

3.
V=(4/3)πr³=(4/3)*π*7³≈1436 cm³

4.
V=(4/3)πr³
r³=3V/4π

r=∛(3V/4π)

5.
s1/s2 = ∛(V1/V2)
s1/s2 = ∛(540/20)= ∛27=3/1
s1/s2 =3/1

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Ответ:

soviet85

07.11.2020

Mathematics

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answer:

In the attached file

Step-by-step explanation:

In the attached file

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