tolong bgtt dibantu ya Kak please Besok dikumpulkannya (yg dibulatkan saja) pakai caranya

a. 22/7x49x49=7,546
c. 3.14x5x5=78.5
e. 22/7x10.5x10.5=346.5
g. 3,14x1.4x1.4=6.1544
i. 3.14x25x25=1,962.5
4.i.22/7x7x7=154
28x14=392
392-154=238
ii. 3.14x10x10=314:4=78.5
iii. 22/7x10.5x10.5=346.5
21x21=441+346.5=787.5