Answer:
c.132
Step-by-step explanation:
so we are given the diameter which is 42m **the diameter is the straight line that passes through the middle of the circle**
but in order to find the circumference we need to find the radius **the radius is always half (1/2,0.5) of the diameter**
so we have to divide 42/2 which equals 21
now we need to set up the formula;
c=2πr/c=2xπxr **when unknown variables such as 'r' are next to another mathematical numeral such as the pi symbol you don't really have to but the multiplication symbol between them**
c=2π21
=131.946891451
and in your case, it seems we must round to the tenths place so the nine then "becomes a ten" and you're left with 132
good luck :)
i hope this helps
have a good one !!
The volume of the prism is 9 in³.
<h3 /><h3>What is a prism?</h3>
A prism is a 3-dimensional shape, with two identical shapes facing each other.
To calculate the volume of the prism, we use the formula below.
Formula:
- The volume of the prism (V) = 72×volume of one cube
- V = 72L³............. Equation 1
Where:
- V = Volume of the prism
- L = Length of the cube
From the question,
Given:
Substitute these values into equation 1
- V = 72(1/2)³
- V = 72(1/8)
- V = 9 in³
Hence, the volume of the prism is 9 in³.
Learn more about prisms here : brainly.com/question/23741714
Answer:
1/2+1/2=2/2
Step-by-step explanation:
Sorry if im wrong, 2/2+5/1=2/2+10/2=12/2
12÷2=6
Answer:
r = 4
Step-by-step explanation:
Volume of a cone:
V = πr²(h/3)
Given:
V = 100.48
h = 6
π = 3.14
Work:
V = πr²(h/3)
100.48 = r²(3.14)(6/3)
100.48 = r²(3.14)(2)
100.48 = r²6.28
r² = 100.48/6.28
r² = 16
r = 4