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LUCKY_DIMON [66]
1 year ago
11

HELP WITH THIS PLSSS ITS CYLINDERRR

Mathematics
2 answers:
kiruha [24]1 year ago
8 0

Answer:

6. surface area= 2πrh

where r=radius of the base

h=height of the cylinder

π=pie

π=22/7, r=3.6, h=8.5

2×22/7×3.6×8.5= 192.3cm²

square root of 192.3 is 13.9, the one whose square root is closest to that of 192.3 in the options is 178 whose square root is 13.3. A

7. volume=product of the height and its base area

volume=πr²h

22/7×3.6²×8.5 = 346.2. D

Sindrei [870]1 year ago
7 0

Answer:

6) B

7) D

Step-by-step explanation:

6)

The surface area of a cylinder is 2 * pi * r * (r + h)

SA = 2 * 3.14 * 3.6 * (3.6 + 8.5) = 2 * 3.14 * 3.6 * 12.1 = 273.6 cm^2

7)

The volume of a cylinder is pi * r^2 * h

V = 3.14 * (3.6)^2 * 8.5 = 345.9 cm^3

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