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AT= A1x2 + A2X3 = 357.7 cm
A2= bxaA= 15x7 A= 105 cm
15

V= 4x 3,1416 x r^3 3V= 4x 3,1416 x 4.25^3 3V= 4 x 3,1416 x 76.8 3V= 321,6990877= 322 cm^3322cm^3= 0,322dm^3=l

r =4,25cm

0,320 25cm^3= 0,320 25 dm^3=l

Rodrigo filipe, Bruno e Margarida 8B

V=A𝑏×𝑎 V= 21,35x 15 V= 320,25cm^3

𝐴1=𝑏×𝑎 2A= 7 x 6,1 2 A= 21,35 cm^2

a=?

a^2=7^2-3,5^2a^2= 49- 12,25a^2= 36.75 = √36.75 = 6,062177826 a = 6,1 cm

d= 8,50 cm

Áreas e volumes de dois sólidos