**Here is my Growing Post for Surface Area**

a = 2 x 8

a = 16cm²

a = l x w

a = 2 x 2a = 4cm²

TSA

= (bigger rectangle)+(bigger rectangle)+(bigger rectangle)+(bigger rectangle)+( smaller rectangle) + (smaller rectangle)

= 16 + 16 + 16 + 16 + 4 + 4

**TRIANGULAR PRISM :**

a = b x h ÷ 2

a = 7 x 4 ÷ 2

a = 18cm²

**Here is the formula to calculate the area of a rectangular prism**

a = l x w

a = 3 x 7

a = 21cm²

a= l x w

a = 3 x 8

a = 24cm²

a= l x w

a= 3 x 4

a = 12cm²

**TSA**

**= (triangle)+(triangle)+(rectangle)+(rectangle)+(rectangle)**

= 18+18+21+24+12

= 73cm²

**r = d ÷ 2**

**r = 6 ÷ 2**

**r = 3cm**

**²**

**Here is the formula to calculate the area of a cylinder**

**sa = 2 x (pi x r²) + (pi x d x h)**

**sa = 2 x 3.14 x 3 x 3 + 3.14 x 6 x 7**

**sa = 56.52 + 131.88**

**sa = 188.4 cm**

**²**

So that's my " growing post " for " surface area " ... hope you liked it and feel free to comment. byee

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