Answer:
1st question
63.63
2nd question
28.3
3rd question
25.1
4th question
70.4
5th question
1404.93
Step-by-step explanation:
1.
area= π×r^2
3.142×4.5squared
radius is 4.5
4.5 squared is 20.25
20.25×3.142 is 63.6255
2.d.p is 63.63
2.
circumference is pi times diameter
3.142×9 is 28.278
1.d.p is 28.3
3.
4×2=8 (diameter)
circumference is pi times diameter
3.142×8=25.136
1.d.p=25.1
4.
11.2×2=22.4(diameter)
circumference is pi times diameter
3.142×22.4=70.3808
1.d.p=70.4
5.
area is pi times radius squared
radius=11.2
11.2 squared is 125.44
3.142×125.44=1404.928
2.d.p=1404.93
hope this helps!
9514 1404 393
Answer:
2. -(-73) is positive
Step-by-step explanation:
It's not too difficult, but you can get wrapped around the axle. Here are the rules:
- the opposite of a positive number is a negative number
- the opposite of a negative number is a positive number
That is, turning a number to its opposite is just changing its sign.
__
If you layer these rules, you find ...
the opposite of (<em>the opposite of a positive number</em>) is a positive number
The first rule tells you <em>the statement in parentheses is a negative number</em>, and the second rule tell you its opposite is a positive number.
That is, a double opposite gets you back where you started. In short, <em>any even number of minus signs cancel each other</em>.
__
The numbers you have listed here* are ...
- -730 (negative)
- -(-73) = 73 (positive)
- -75 (negative)
- -(-(-701)) = -701 (negative)
_____
* We say "listed here" because we're seeing mismatched parentheses and brackets, so we know something is missing. We're going by the signs and numbers that we do see. YMMV
Answer:
I think 5 faces and 10 edges but im not sure what a vertice is sorry
Step-by-step explanation:
I don't know what is the question
but this is the pictures of the points
good luck
