The answer is 138 yards.
You need to find perimeter i.e.,
perimeter(P) = 2* (length + width)
= 2* (42 + 27)
= 2* 69
= 138
It cannot be a cube.
A cone and pyramid have 1 base and a sphere has none.
The plant will be 34 millimeters after 8 months and 118 millimeters after 3 years. I solved this using the formula y=10+3x, where you are solving for y. You would replace x with the number of months and then solve.
Yes he is correct because if he multiply 3by 100 equals it equals 300 thousands