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Surface Area of a Rectangular Prism

TOP

5 cm

SIDE

FRONT

4 cm

10 cm

Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm2

Surface Area of a Rectangular Prism

TOP

5 cm

SIDE

FRONT

4 cm

10 cm

Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm2

Area of front and back 10x5 = 50 x 2 = 100cm2

Surface Area of a Rectangular Prism

TOP

5 cm

SIDE

FRONT

4 cm

10 cm

Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm2

Area of front and back 10x5 = 50 x 2 = 100cm2

Area of sides

4x5 = 20 x 2 = 40cm2

Surface Area of a Rectangular Prism

TOP

5 cm

SIDE

FRONT

4 cm

10 cm

Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm2

Area of front and back

10x5 = 50 x 2 = 100cm2

Area of sides

4x5 = 20 x 2 = 40cm2

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SURFACE AREA

220cm2

Find the surface area

5 cm

3 cm

21 cm

Top and bottom

21x3 = 63 x 2 = 126cm2

Front and back

21x5 = 105 x 2 = 210cm2

Sides

3x5 = 15 x 2 = 30cm2

________

SURFACE AREA

366cm2

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