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2 years ago

40 points help please A right cylinder has a radius of 7 cm and a height of 3 cm.

Mathematics

1 answer:

11Alexandr11 [23.1K]2 years ago

7 0

Step-by-step explanation:

(a) use surface area formula of cylinder that is for Lateral surface area and for total surface area

LSA= 2πrh

TSA= 2πr(h+r)

(b) volume of cylinder= πr^2h

..........

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15. Solve for the specified variable: - х + 7 8 - 10; for y.

Andreyy89

Answer:

$y=80-\frac{8x}{7}$

Step-by-step explanation:

15). Given equation is,

$\frac{x}{7}+ \frac{y}{8}=10$

Multiply the equation by 8,

$8(\frac{x}{7}+ \frac{y}{8})=10\times 8$

$\frac{8x}{7}+y=80$

Subtract $\frac{8x}{7}$ from both the sides of the equation,

$\frac{8x}{7}+y-\frac{8x}{7}=80-\frac{8x}{7}$

$y=80-\frac{8x}{7}$

Therefore, value of the variable 'y' will be,

$y=80-\frac{8x}{7}$

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2 years ago

Helps pls! Find the length of AB, given that DB is a median of the triangle and AC= 26

oksano4ka [1.4K]

Answer:

AB = 13

Step-by-step explanation:

cuz , median divides a side into two equal parts such that AB = BC = 1/2 (AC)

So, AB = 1/2 × AC

AB = 1/2 × 26

AB = 13 units

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