Answer:

Step-by-step explanation:

Given:

Radius of circular mirror, r = 6x

Length of metal frame, l = 18x

Area of square, As = l^2

Area of square = 18x × 18x

= 324 x^2.

Area of circular mirror, Ac = pi × r^2

= π × (6x)^2

= 36π x^2.

The expression for the area of the frame is subtracting the mirror from the metal frame = As - Ac

= 324x^2 - 36πx^2

= 36x2 (9 - π).

**Answer:**

4.23691242438e+12

**Step-by-step explanation:**

**Answer:**

a = 2

b = 4

c = 8

**Step-by-step explanation:**

Remember the relationship:

First, in "a" we have:

a)

then in the next ones, we can use the result that we obtained in the part a:

b)

Now we can do exactly the same in c:

c) where first we need to know that:

2*2*2*2 = 4*4 = 16

then:

2^4 = 16

then:

Now let's solve the problem:

**Answer:**

it is b I just did it

**Step-by-step explanation:**