Answer:
156
Step-by-step explanation:
s8 = n/2 [2t + (n-1)(d)]
= 8/2 [2(2) + (8-1)(5)]
= 4 [4 + (7)(5)]
= 4 (4 + 35)
= 4 (39)
= 156
Answer:
0.341
or 1.0723
Step-by-step explanation:
the volume of hemisphere = (2/3)

r = (1/2)d = 0.8
(2/3)
= 0.341
= 1.0723
Answer:
3BC
Step-by-step explanation:
8BC - 9BC + 10BC - 6BC = BC(8 - 9 + 10 - 6) = BC(3) = 3BC