Answer: 660 cm²
Step-by-step explanation:
Surface area of a cylinder = 2πr² ± 2πrh = 2πr ( r + h )
π = 22/7
r = 6 cm
h = 11.5 cm
Lateral surface area = 2 x 22/7 x 6 ( 6 + 11.5 )
= 660 cm²
77/12 or 6 5/12
Explanation:
1.) Convert the mixed number to a improper fraction.
2.) You’ll get 55/6 — 11/4.
3.) Subtract the Fractions.
4.) Then you’ll get 77/22 or 6 5/12.
First you want to figure out 196- 16. That will give you 180. Now divide 180 by 2, which is 90. So the numbers in the parentheses have to add up to 90. Now you want to add 7 and 5. This will give you twelve. Then subtract 12 from 90 to get 78. 78 divided by 3 will give you nine. 78 divided by 3 is 26, so y would be equal to 26.
Answer:
0.645
Step-by-step explanation:
since a percent is out of 100, it could also be written a 64.5/100,
then converting a fraction into a decimal is jus dividing the two equaling to 0.645
Answer:
137.5 in^2
Step-by-step explanation:
So, this is basically a rectangle and two right-sides triangles.
First the rectangle: Formula is A=wl
Replace the Values: A = 14*7 98 in^2
Then we solve for the two right-sides triangles.
A= 1
/2a
h=
1
/4
b
^2
sin
(2
θ
)
Top trinangle= A = 25.5 in^2 (height 7 in base 7 in)
Bottom Trinagle A = 14 in^2 (height 7 in base 4 in)
Add results:
98+25.5+14 = 137.5 in^2
