Se um círculo possui o diâmetro igual a 5 cm, considerando = 3,14 qual o valor da área desse círculo?

19.625 cm²

Step-by-step explanation:

Diameter = 5 cm

So Radius = 5/2 cm = 2.5 cm

Area of a circle = πr²

So

3.14×2.5² cm²

3.14×6.25 cm²

19.625 cm²

a) 7x=7

step-by-step explanation:

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: