Answer:
Circumference is 18.84 feet. Area is 28.26 square feet.
Step-by-step explanation:
Given:
Radius of the circle,
The value of is 3.14.
Now, circumference of a circle of radius is given as:
Also, area of the circle of radius is given as:
Therefore, the circumference of the circle is 18.84 feet and area of the circle is 28.26 square feet.
Answer:
AD = 4.5
Step-by-step explanation:
Since the two bases of the two given triangles are parallel the triangles are similar.
Triangle BDE is similar to Triangle BAC
From this the following proportion can be set up.
BE / BC = BD/BA
BE = 8
BC = 8+12 = 20
BD = 3
BA = 3 + x where x = DA
8/20 = 3/(3+x) Cross Multiply
8(3 + x) = 3 * 20 Remove the brackets on the left. Combine Right
24 + 8x = 60 Subtract 24 from both sides
8x = 60 - 24 Combine the right
8x = 36 Divide by 8
x = 36/8
x = 4.5
But x = AD
It’s c because peep how it’s listed least to greatest
Alrighty
3 cubes
if you stack them then you can cover, at most 3 faces
each cube has 6 faces
so 6*3=18
minus the 3 coverd is 18-3=15
so if the surfece area is equal to 15 of those faces ten
84=15 faces
divide by 15
84/15=area of 1 face
a cube has 6 faces to multiply by 6
84/15 times 6=504/15=168/5=33.6 square inches is the surface area of one of grogg's cubes