a right cylindrical solid is cut in half to form the figure shown. if the length is 20 cm and the diameter is 8cm, what is the surface area? (please explain thoroughly)

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

X+y=-4 x-y=2 use elimination with adding and subtraction