Hey there!
Given that this flower bed is circular, it can be assumed that it's a cylinder. In this problem, we need to use the equation for the volume of a cylinder:
V = π r² h
Since we just need to find the area that the mulch will take up, we'll use that given measurement of 4 inches in place of the actual height of the flower garden. Since we need the radius, all we have to do is divide the 12 inch diameter measurement in half to get a radius of 6 inches. Usually for these problems, they'll tell you to use 3.14 for pi instead of the full pi number, so we'll just use that to make things easier.
V = π (6)² (4)
V = π (36)(4)
V = π (144)
V = 452.16
The volume of the mulch needed will be 452.16 in³.
Hope this helped you out! :-)
The radius will be 7.25cm
The circumference will be about 45.55
The area will be about 165.13
Answer:
B
Step-by-step explanation:
The figure is a trapezium with area (A) calculated as
A = h (a + b)
where h is the perpendicular height and a, b the parallel bases
Here h = 8, a = 10 and b = 6, thus
A = × 8 × (10 + 6) = 4 × 16 = 64 cm² → B
The sum of the amounts of change in the bacteria after the seventh day is 6554.
<h3>What is the geometric sequence about?</h3>
The sequence are:
2, -8, 32, -128
Note that a first term of:
(a) of 2
A common ratio (r) of -8/2 = -4.
So the sum of n terms is said to be:
Sn = a1·(r^ n -1)/(r -1)
For the given sequence, the sum of 7 terms is said to be:
S7 = 2·((-4)^7 -1)/(-4-1)
= 2(-16384/-5)
= 6554
Therefore, The sum of the amounts of change in the bacteria after the seventh day is 6554.
Learn more about geometric sequence from
brainly.com/question/17166546?referrer=searchResults
#SPJ1
So we know that the length of the rectangle is 9 meters.
In order to find area of a rectangle, you multiply the length by the width.
To find the width, you divide the area by the side you do have , which is 9 meters.
72 divided by 9 is 8.
So the width 8 meters, and now to find the perimeter you must add all sides of the rectangle.
9+9+8+8 = 34.
The perimeter of the rectangular garden is 34 meters.