**SURFACE AREA OF A CUBE = 6s²**

S.A. = 6s²

S.A. = 6(2²)

S.A. = 6(2x2)

S.A. = 6(4)

S.A. = 24u²

**SURFACE AREA OF A RECTANGLE = 2(lw)+2(lh)+2(hw)**

S.A. = 2(lw)+2(lh)+2(hw)

S.A. = 2(5x6)+2(5x4)+2(6x4)

S.A. = 2(30)+2(20)+2(24)

S.A. = 60+40+48

S.A. = 148cm²

**SURFACE**** AREA OF A CYLINDER = 2πr²+2πrh**

S.A. = 2πr²+2πrh

S.A. = 2π(4²)+2π(4)h

S.A. = 2π(4x4)+2π(4)h

S.A. = 2π(16)+2π(4)

S.A. = 32π+8π

S.A. = 100.48+25.12

S.A. = 125.6cm²

**COMPO****SITE SHAPES**

- a composite shape is a shape that can be divided into basic shapes, like a square, a rectangle, a triangle, etc.

This figure can be divided into two basic shapes, a triangle and a square.

**HOW DOES SYMMETRY HELP US SOLVE SOME OF THESE SURFACE AREA PROBLEMS?**It helps us solve some of these area problems because some of the shapes have symmetry. Some shapes have sides that are the same, like, a square. all 6 sides have identical sides. If we know that there it has identical sides, then we can form a formula to solve the surface area of the shape.

**WHAT HAPPENS IF A PART OF ANY OF THESE SHAPES IS MISSING? HOW DO I FIND SURFACE AREA THEN?**

If there was a part missing in any of these shapes, you would have to calculate the missing area, and subtract it from the original shape.

THANK YOU FOR READING MY BLOG POST ! (: I hope this helps you learn more about surface area and please feel free to comment if I made any mistakes.

## 1 comments:

Great post Melissa! I liked how you used a lot of colours, and your examples are very clear. Although, it should be rectangular prism, not just rectangle. But overall, Awesome post!

## Post a Comment