Math Problem Solver

Calculate the total length of the wall. - The wall will go around the garden except for the back of the house (7 m) and the corner with trees (3 m). - Total perimeter of the garden = 9 m + 3.4 m + 8.3 m + 1.5 m + 3 m = 25.2 m - Length of the wall = Total perimeter - (back of the house + corner with trees) - Length of the wall = 25.2 m - (7 m + 3 m) = 15.2 m

Step 2

Calculate the number of stones needed for the height of the wall. - The wall height is 2.64 m. - Each stone is 220 mm high, which is 0.22 m. - Number of stones needed for height = 2.64 m / 0.22 m = 12 stones

Step 3

Calculate the number of stones needed for the length of the wall. - Each stone is 450 mm long, which is 0.45 m. - Number of stones needed for length = 15.2 m / 0.45 m ≈ 33.78 stones - Round up to the nearest whole number: 34 stones