January 2019 1 218 Report
Sebuah belahan bola padat berdiameter 28 cm, hitunglah luas seluruhnya!
jawab:
luas seluruhnya = luas kulit 1/2 bola+luas alas
=1/2 ×....× phi ×....+phi ×.... =....+....=....×22/7×....=....cm²
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