Answer:
I think
11cm²-5cm²=121+25
and the square root of that will give you 12.08
and that's the answer
If the diagonals of a quadrilateral bisect all the angles, then it's a rhombus, converse of a property. If the diagonals of a quadrilateral are perpendicular bisectors of each other, then it's a rhombus, converse of a property.
Answer C is correct because 2×(4×305) is the same as (2×4)×305 and 2×4=8.
Let the length be l, width w and height h, then
Volume = length x width x height
l = 10cm, w + h = 18cm
V(h) = 10(18 - h)h = 180h - h^2
V(h) = 180h - h^2
