Answer:
64
Step-by-step explanation:
16 x 4 = 64
Answer:
Simple, 4*pi*r^2
Step-by-step explanation:
Number is an isosceles triangle number seven is a right angle triangle number 9 I believe is a scalene triangle number 10 is a right angle triangle I also believe 11 is a scalene triangle and I believe number 8 is equilateral triangle
