☰ Mundarija · Matematika

Piramida yoyilmasi, doira va shar, silindr va uning yoyilmasi

Darslar 124–127 · 4 ta dars · I.V. Repyova. Matematika 4-sinf, 1–4-qismlar. Novda Edutainment, Toshkent, 2023
Javoblar ota-onalar va o‘qituvchilar uchun.
1
Radiusi 12 cm bo‘lgan doiraning diametri necha cm?
2
Asosi 25 cm², 4 ta yon yog‘i 18 cm² dan bo‘lgan piramidaning to‘la sirti yuzi necha cm²?
3
Silindr yon sirtining yoyilmasi 40 cm × 15 cm to‘g‘ri to‘rtburchak. Uning yuzi necha cm²?
4
Sharning diametri 26 cm. Radiusi necha cm?
5
Oltiburchakli piramida yoyilmasi nechta bo‘lakdan iborat?