Answer: 400 units
Step-by-step explanation:
Volume=1/3a^2h
=1/3(10)^2(12)
=400
Basically estimating is rounding, im going to futher explain this with an example.
For example:
If I wanted to round a number by it's nearest tenth such as 678
(*example)
there are 70 tenths
now when you are estimating when you are rounding to the nearest number if the number has a higher value then 5 you increase the number if it is lower than 5 you STAY the same.
now
678,
since the number next to it is 8, 7 increases and everything else turns into zero. so 678 rounded to the nearest 10th
is 680!
Hope this example helped!
The answer is a, all rhombuses have equal sides, if they have equal sides then day have equal angles.
