The figure shows an ancient coin which was once used in China. The coin is in the shape of a circle of radius 3 cm with a square of sides cm removed from its centre. The area of each face of the coin is 77
cm.
() Form an equation in x and show that it reduces
to 20 - r=0.
(ii) Solve the equation 20 - = 0.
(in) Find the perimeter of the square.

salary

step-by-step explanation:

the answer is 99.

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: