Expand your knowledge base with the help of IDNLearn.com's extensive answer archive. Our community is ready to provide in-depth answers and practical solutions to any questions you may have.
1. Triangle: the area of the triangle is C. (bh)/2
2:Parallegram: the area is a. LW
3. Semi-circle: the area is b. (pi r^2)/2
4. Trapezoid: the area will be D. (b1+b2)(h)2