[PICTURE ATTACHED] HELLLP

380

Step-by-step explanation:

(base of the triangle * height of the triangle) / 2 = 40

40*9.5 = 380

The white marble section would cost 380.

Step-by-step explanation:

To find the area of a triangle, one would multiply two sides as they would with a rectangle or square and then divide by two. In this case, you could simply multiply one triangle to get the area of both, as it is doubled.

4 x 10 = 40, so forty square feet of white marble is needed.

Now, we multiply by 9.50, as that is the price in dollars the bank has to pay for each square foot.

9.50 x 40 = 380.

but there’s no any figure there!

55 degrees because 55+55=110 degrees