22). luas 1 = 18x7 = 126 cm2 luas 2 = 8x5 = 40 cm2 luas 3 = 8x26 = 208 cm2 luas bangun diatas = 126+40+208 = 374 cm2
23). keliling 1/2 lingkaran = 1/2 x 3,14 x 10 = 15,7 cm keliling 1/4 lingkaran = 1/4 x 3,14 x 20 = 15,7 cm keliling bangun diarsir = 15,7+25+15,7+15 = 71,4 cm
Verified answer
22). luas 1 = 18x7 = 126 cm2luas 2 = 8x5 = 40 cm2
luas 3 = 8x26 = 208 cm2
luas bangun diatas = 126+40+208 = 374 cm2
23). keliling 1/2 lingkaran = 1/2 x 3,14 x 10 = 15,7 cm
keliling 1/4 lingkaran = 1/4 x 3,14 x 20 = 15,7 cm
keliling bangun diarsir = 15,7+25+15,7+15 = 71,4 cm
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