A triangle has sides with lengths of 6 cm 8 cm 10 cm how long will the hypotenuse be

A man is tiling a tabletop using rectangular and square plastic tiles. He uses a pattern like that shown in the diagram. The rectangular tile "A" measures 15 x 5 cms. What is the distance X to Y? What is the area of square tile B? How many tiles would be needed if the sides of the pattern were trebled in length? The man finds that he can only buy square tiles which measure 5 x 5 cms. He cannot buy rectangular tiles. How many small square tiles would he need to fill the diagram?

the roof of a house has a shape of a pyramid with a square base of 8m sides. the height of this pyramid is 3m. mr. gordon wants to cover this roof with plywood worth $28 per m2. what will be the cost of this renovation.

An equilateral triangle has perimeter 12 cm. Find its area