Question

This would be 21.19 right

Answer 1

@welshfella

Answer 2

No that is not correct

B refers to the AREA of the base - which you are told is a square of side 3.75cm

Answer 3

square of side so would I divide

Answer 4

Because they do give you 3.75 cm

Answer 5

no

what is the area of a square that has a side of 3.75 cm?

Answer 6

14.06

Answer 7

That's right, and that's your B.

Answer 8

so the value of B in the equation is 14.06

so use that to work out V from the equation

Answer 9

V= 14.06 * 5.65
V= 79.44

Answer 10

you should not round th area until you have multiplied by height

you have introduced a small error...

Answer 11

I did multiply first

Answer 12

Then I rounded, my answer was 79.439 then I rounded at the end

Answer 13

BUT

you rounded the B value first (it is not 14.06 - it is 14.0625)

Use that and THEN round

Answer 14

Do the rounding at the end of the calculation.

Answer 15

so using that i got 79.453125

Answer 16

NOw rounfd to the nearest 100th

Answer 17

Would the final answer then be 79.45

Answer 18

Correct

All prisms can be treated teh same - area of BASE times height = volume

Answer 19

cm ^3 right