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emmasim [6.3K]
3 years ago
7

Please help asap!!!!!!!! Number 2 and 3

Mathematics
1 answer:
romanna [79]3 years ago
7 0

Answer:

Step-by-step explanation:

2)  r = 16/2 = 8 cm

Area of top and bottom = 2*πr²

                                        = 2 * 3.14 * 8 * 8

                                       = 401.92 cm²

Midlle part = h * πd

                 = 6 * 3.14 * 16

                = 301.44 cm²

Total = 401.92 + 301.44

        =        703.36 cm²

3) Area of front and back = 2* \frac{1}{2}*b * h\\

                                         = 2*\frac{1}{2} * 3 * 4\\\\= 12 cm^{2}

Area of bottom = length * breadth

                           = 12* 3

                          = 36 cm²

Area of left =  12 * 4

                  = 48 cm²

Area of right = 12 * 5 = 60 cm²

Total = 12 + 36 + 48 + 60 = 156cm²

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