Answer:
1. 7.5 m
2. 14π or 43.96 cm
3. 20 cm
4. 5π or 15.7 m
5. 24 m
Explanation:
1. You do base×height×1/2. So in this case, it is 5×7×1/2. 5×7 is 35, and that times 1/2 is 17.5 m.
2. To find the circumference is just the radius×2×3.14, or pi. So since the radius is 7, I do 7×2, which is 14, and the answer is 14π, or 14×3.14, which is 43.96 cm.
3. The perimeter for a square is just the side length multiplied by 4, in this case it is 5×4 which is just 20 cm.
4. To find the circumference with the diameter is just diameter×pi, so it is 5π, or 5×3.14 which is 15.7 m.
5. I added all the sides, the unknown side is just 5+1, and the shorter side is 2, so I did 5+3+6+2+1+3+2+2 and got 24 m.
Hope this helps! If you are still confused, please comment!