All categories

2 years ago

Can someone please help me.

Mathematics

2 answers:

emmasim [6.3K]2 years ago

6 0

Answer:

volume= 1/3πr²h

932.58=1/3×3.14×r²×11

3×932.58=34.54×r² ×3

2,797.74 = 34.54×r²

34.54. 34.54

√r²= √81

r=9mm

Anika [276]2 years ago

5 0

Answer:

Radius= 8.99 mm (9 mm)

Step-by-step explanation:

We use the formula for the volume of a cone which is

1/3 pi ×(radius)^2 *height

932.58 = (pi) × (11) ×(r^2/3)

Radius^2 = (932.58×3) / (11pi)

= 80.96m

Radius= 8.99mm

You might be interested in

Find the size of angle xyz give your answer to 3 significant figures

KengaRu [80]

Answer:

68.2°

Step-by-step explanation:

This is a right triangle, so we can use SIN,COS,TAN to solve for the angle.

We want ∠YXZ

THe side opposite to the angle is given as 20

The side adjacent to the angle is given as 8

Which trig ratio relates "opposite" and "adjacent"??

It is Tan!!

Thus, we can write:

$Tan(\angle YXZ)=\frac{20}{8}\\Tan(\angle YXZ)=\frac{5}{2}\\Tan(\angle YXZ)=2.5\\\angle YXZ = ArcTan(2.5)\\\angle YXZ = 68.2$

THis is the angle

68.2°

8 0

3 years ago

2/5 of 60 please help

klasskru [66]

Answer:

60/5 is equal to 12. so 12 x 2= 24, and 5 x 12=60, so 24/60, or just 24

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

I need to solve this question

Neporo4naja [7]

The answer is (0,2).

6 0

3 years ago

Read 2 more answers

How many places do you need to move the decimal to the right to write

GenaCL600 [577]

Answer:

$7$ places.

Step-by-step explanation:

There are seven zeros, so in powers of ten notation it is written as $10^{-7}$

$2.1 \times 10^{-7}$

6 0

3 years ago

Why do you rarely find math teachers spending time at the beach

Sliva [168]

They are busy grading papers and preparing for other things.

8 0

3 years ago