3. Antarktida yuzasi
Xarita
masshtabidan foydalanib, Antarktida yuzini aniqlang.
Yechish: Quyidagi doirani chizamiz. Kontinent
yuzi taxminan shu doira
yuziga teng. Shu bois mazkur doira yuzini hisoblaymiz. Chizg’ich
yordamida
doiraning radiusini o’lchaymiz va uni masshtabga ko’paytirib
r = 4000 km
ekanligini topamiz.
Unda doira yuzi
S = r
2
= 3,14 ∙16 000 000 = 12 600 000 = 12,6 mln kv. km
ga teng bo’ladi.
Javob: 12,6 mln kv. km.
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