101 Essays That Will Change The Way You Think

101 Essays That Will Change The Way You Think

Matematika hitunglah luas bangunan yang diarsir ini...​

hitunglah luas bangunan yang diarsir ini...​

Luas yang diarsir

= (1/4×Ο€×r²) - (1/2×Ο€×r²)

= (1/4×22/7×28×28) - (1/2×22/7×14×14)

= (22×28) - (11×2×14)

= 616 - 308

= 308 cm²

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