Use the pythagorean theorem. The hypotenuse (c) is 10, and one of the sides, let's say (b), is 6. Therefore, we need to solve for a and plug and chug. Let's do that:

$c^2 = a^2+b^2$

$a = \sqrt{c^2-b^2}$

Now let's plug in what we know:

$a = \sqrt{10^2-6^2} = \sqrt{64} = 8$

Therefore, a = x = 8

4 0

3 years ago

The formula for the surface area of a cylinder is 2pi r(r+h) where rrr is the radius of the cylinder's base and h is its height.

kodGreya [7K]

Answer:

Step-by-step explanation:

Given the formula for the surface area of a cylinder as S = 2πr(r+h) where r is the radius of the cylinder's base and h is its height.

Given parameters

base radius of the cylindrical pole = 10 cm

Height of the cylindrical pole = 2 m

Since 100 cm = 1 m, then 2 m = 200 cm

Height of the cylindrical pole (in cm) = 200 cm

Required

Surface area of the pole (in cm²)

Using the formula for finding the surface area of a cylinder as shown above;

$S = 2\pi r(r+h)\\\\S = 2\pi (10)(10+200)\\\\S = 2\pi 10(210)\\\\S = 2\pi * 2100\\\\S = 4200\pi cm^2$

Hence the surface area of the pole in square centimetres is 4200πcm²

7 0

4 years ago

What value of x makes the statement true?

Svetlanka [38]

Answer:17

Step-by-step explanation:

You just follow the steps

7 0

3 years ago