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mina [271]
3 years ago
6

A cone's height is equal to the radius of its base. The area of its base is 1,386 square units. The approximate radius of the co

ne's base is____ units. The approximate volume of the cone is ____cubic units. Use . Pie= 22/7
Mathematics
1 answer:
maxonik [38]3 years ago
4 0

Answer:

  • 21 units
  • 9702 units³

Step-by-step explanation:

The area of the base is given by the formula ...

  A = πr²

so the radius is ...

  r = √(A/π) = √(1386/(22/7)) = √441 = 21 . . . units

__

The volume is given by ...

  V = (1/3)Bh

where B is the area of the base, and h is the height (equal to the radius). Filling in the numbers, we have ...

  V = (1/3)(1386)(21) = 9702 . . . . cubic units

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Chad has a rope that is 8 yards long. How many pieces of rope measuring 4/7 of a yard can he divide his rope into?
statuscvo [17]

Answer:

B

Step-by-step explanation:

Your answer is 28 because 4/7 turn it to a decimal and then divide 8 from it and that is how you get your answer 28.

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6 0
3 years ago
A. -5<br> B. 11<br> C. 38 - 8i<br> D. 3+ 8i
siniylev [52]

Answer:

D.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Answer this ASAP I really need it
Ede4ka [16]
Given the expression
-2 + 6.45z - 6 + (-3.25z)

First, classify like terms, constant with constant, coefficient-variable with coefficient-variable
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Second, combining like terms
= 6.45z + (-3.25z) - 2 - 6
= 6.45z - 3.25z - 8
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8 0
3 years ago
Can anyone help with either one of these
Vlada [557]
slope-point form:
we need the slope (m) and a point.
y-y₀=m(x-x₀)
Given two point A(x₁,y₂) and B(x₂,y₂), the slope of the line  is :
m=(y₂-y₁) /(x₂-x₁)

Example 3:
we can take two points:
A(12,2)
B(13,7)
m=(7-2) / (13-12)=5/1=5

therefore:
y-2=5(x-12)
y-2=5x-60
y=5x-60+2
y=5x-58

answer: y=5x-58

Example 4:
we can take two points.
A(0,0)
B(3,1)
m=(1-0)/(3-0)=1/3

Therefore:
y-0=1/3(x-0)
y=x/3

answer: y=x/3
4 0
3 years ago
I need help in a and b ​
Deffense [45]
A.24cm
B. 246.12 I'm is the answer!!!!!
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2 years ago
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