Figure shows a cross sectional view of a masonry dam whose length perpendiclar to

Figure shows a cross sectional view of a masonry dam whose length perpendiclar to te diagram is `30 m`. The depth of the water behind te dam is `10 m`. the masonry of which is the dam is constructed has a density of `3000 kg//m^(3)`. a. Find the dimensions `x` and `2x` if the weight of the dam is to be `10` times the horizontal force exerted on it by water. b. Check the stability of the dam with respect to its overturning about the edge through point `O`.