Geometrik shakllar bo‘yicha savol

Berilgan jismning hajmi uning asosining maydoni $S$ va balandligi $h$ ning ko‘paytmasining $\dfrac13$ ga teng bo‘ladi: $V=\dfrac13 S\cdot h$. Asos – to‘g‘ri to‘rtburchak bo‘lib, uning tomonlari $a=10\ \text{dm}$ va $b=20\ \text{dm}$, shuning uchun $S=a\cdot b=10\cdot20=200\ \text{dm}^2$. Jismning balandligi $h=5\ \text{dm}$ berilgan. Endi formulaga qo‘yaymiz: $$V=\frac13\cdot200\cdot5=\frac13\cdot1000=333\ \text{dm}^3.$$ Shunday qilib, jismning hajmi $333\ \text{dm}^3$ ga teng, ya’ni to‘g‘ri javob **C** variantidir.