3 years ago

Please someone help with my homework

Mathematics

2 answers:

matrenka [14]3 years ago

4 0

Answer:

x is bigger than or equal to -3

Step-by-step explanation:

Anvisha [2.4K]3 years ago

3 0

Answer:

Sould be x ≥ −3

Step-by-step explanation

You flip the eqation, subtract 8 from both sides, and divide both by 4.

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the diameter of a cylinder is 14cm.the height of the cylinder is 9cm. calculate the Volume and curved surface area

kicyunya [14]

Answer:

The volume is 1386 cm³ and curved surface area is 396 cm².

Step-by-step explanation:

Given that,

The diameter of a cylinder is 14 cm

Height of the cylinder is 9 cm

We need to find the volume and curved surface area .

If r is the radius, r = 14/2 = 7 cm

Volume of a cylinder is given by :

$V=\pi r^2 h\\\\V=\dfrac{22}{7}\times (7)^2 \times 9\\\\V=1386\ \text{cm}^3$

The curved surface area of the cylinder is given by :

$A=2\pi r h\\\\A=2\times \dfrac{22}{7}\times 7\times 9\\\\A=396\ \text{cm}^2$

So, the volume is 1386 cm³ and curved surface area is 396 cm².

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Please someone help with my homework​

Please someone help with my homework