A swimming pool 9 m wide and 12 m long is 1 m deep on the shallow side and 4 m deep on the deeper side. Its volume in m3 is:

Step-by-step explanation:

This cross section of swimming pool can be divided into two geometric shapes :

Rectangle of dimension 12m x 1m

Triangle with base = 12m, altitude = 3m

Area of Rectangular shape = 12m x 1m = 12m²

Area of triangle = 1/2 x 12 x 3 = 18 m²

Total Area of Cross Section = 30 m²

Total Volume = 30m² x 9m = 270m³

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:

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step-by-step explanation: