Answer: 3) volume= 28ft³
Surface area= 64ft
4) Volume= 24mi²
Surface area= 192mi
Explanation:
3) Volume= length x width x height
= 7x2x2
= 28ft³
Surface area= [(2x2)x2]+[(7x2)x4]
= 8+56
=64ft
4) Volume= 1/2 x length x base x height (whenever finding the areas of triangular shapes you should multiply it by 1/2)
continuation;
= 1/2 x 8 x 6
= 1/2 x 48
= 24 mi³
Surface area= (1/2 x 8 x 6 x 2)+(6 x 6)+(10 x 6)+(8 x 6)
= 48 + 36 + 60 + 48
= 192 mi
I think you can manage to do the other two questions, if you need help let me know and I'm leaving the other questions to you as you should understand and try those questions alone. Still, I'm ready to help :)