24 and 25 I don’t understand how to do it plz help!

For question 24 the In this sum, the greater number is 9, however, 9 doesn't have a negative sign, which means that the answer to this sum should be a positive 3 not negative  

And for question 25 the In this sum, we should use a known rule, a negative number plus a negative number is a negative one, which means that we should be adding -10 and -10 to get a -20.

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.