Calculate the circumference of the inscribed triangle.

Can someone pls ! pls answer all. no explanation needed..

Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants.assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i