2.8 multiplied by 2.8 to find the surface area of the base which is 7.84
4*1/2*2.8*5.5 to find the surface area of all four triangular faces which is 30.8
Plus them together 7.84 plus 30.8 which is 38.64
I believe the answer is 57
Answer:
254.47
Step-by-step explanation:
1/4d^2
Answer:
i think its 24x-12? sorry if it is wrong