Hi can anyone help me with all three questions I have not been taught this topic

240, 1800, 2040

Step-by-step explanation:

First find the surface area of the shape - base = 3 x 15 x 2 + 40 x 15 + 40 x 3 x 2 = 930 m ^2

Now find the area of base = 40 x 15 = 600

Now, the cost of painting = 10 pounds for 25 m^2. SO here cost = 600 / 25 x 10 = 24 x 10 = 240 pounds.

Now cost of tiles  = 600 x 3 = 1800

Total cost = 1800 +240 = 2040

my answer got deleted but it's a

step-by-step explanation:

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step-by-step explanation: