362,012 views
2 votes
2 votes
Any math solver please help me

Any math solver please help me-example-1
User Joe Sleiman
by
2.4k points

2 Answers

12 votes
12 votes

Answer: A, 75.4 cm^3

Explanation:

The formula for the volume of a cone is
V = \pi r^(2) (h)/(3), but in this case
\pi will be substituted for 3.14, as this is what the question requests.

If you look at the diagram, you can see that height (h) is 8cm and the radius (r) is 3cm (it shows the diameter is 6cm. Divided by 2 is 3cm).

We can substitue these values into the equation and we get:


V = 3.14(3)^(2)((8)/(3) )

According to BEDMAS, we do exponents first.


V = 3.14 (9) ((8)/(3))

Then, with a scientific calculator (you can use DESMOS scientific calculator online) we can multiply these three values together.

We get:


V = 75.36 cm^(2)

Since we need to round to the nearest tenth, we end up with 75.4cm³, which is answer A

User Sander Marechal
by
2.7k points
19 votes
19 votes

assuming you mean question 35?

35. A or 4

User JC Carrillo
by
3.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.