Answer:
Step-by-step explanation:
For part a :
The circumference of the circle is given by the formula 2πr. We are given r so we double r and put it next to pi :
C = 2×π×r = 2×π×8 = 16π
For part b :
The area of a circle is given by the formula πr². We are given r so we square r and put it next to pi :
A = π×r² = π×8² = 64π
For part c :
The area of a square is given by the formula a² where a is the side length. This question requires an extra step as we don't have the length of the square. But we know that the diameter of the circle will be equal to the side of the length. The diameter of a circle is given by the formula 2r : so
D = 2r = 2×8 = 16
So the area of the square will equal :
A = 16² = 256
Hope this helped and brainliest and hearts please.
I'm on my road to genius rank
For lines to be perpendicular to each other their slopes must be negative reciprocals of one another, mathematically:
m1*m2=-1
Since y=2x-1 has a slope of 2, our perpendicular line must have a slope of:
2m=-1, m=-1/2, so our perpendicular line will be of the form:
y=-x/2+b, using the point (-2,-2) we can solve for the y-intercept, or "b".
-2=--2/2+b
-2=1+b
b=-3, then our perpendicular line is:
y=-x/2-3 or more neatly
y=-0.5x-3
Answer:
4 mm
Step-by-step explanation:
= 4
So, the answer is 4 mm.
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Answer:
Given:
- A shopper buys a $100 coat on sale for 20% off.
- An additional $5 is taken off the sale price by using a discount coupon.
- A sales tax of 8% is paid on the final selling price.
To find:
- The total amount the shopper pays for the coat.
The formula used to calculate percentage is:(value/total value)*100%.
Step-by-step explanation:
Step 1 of 2
After the 20% sale, the coat costs
100*0.8 = 80 dollars.
Then 5 dollars are taken off for a cost of
80-5 = 75
Step 2 of 2
Now adding on the sales tax,
the final amount is 75(0.8) = 81 dollars
Answer:
They are equilateral ever.
