[{"question":"Obsah kruhu je 4\u03c0. Vypo\u010d\u00edtajte d\u013a\u017eku kru\u017enice, ktor\u00e1 prisl\u00facha tomuto kruhu.","answers":["4\u03c0","2\u03c0","\u03c0","8\u03c0"],"correct":"4\u03c0","order":"1"},{"question":"Vypo\u010d\u00edtajte obvod kru\u017enice, ak obsah pr\u00edslu\u0161n\u00e9ho kruhu je 254,34 cm2<\/sup>.","answers":["64","81","9","8"],"correct":"9","order":"2"},{"question":"Ko\u013eko kilogramov bude v\u00e1\u017ei\u0165 rekordn\u00fd kol\u00e1\u010d s priemrom 5 m, ak 1 m2<\/sup> = 1,5 kg?","answers":["171,57 kg","171,75 kg","117,57 kg","117,75 kg"],"correct":"117,75 kg","order":"3"},{"question":"Ak\u00fd ve\u013ek\u00fd je obsah kruhov\u00e9ho v\u00fdseku, ktor\u00fd op\u00ed\u0161e min\u00fatov\u00e1 ru\u010di\u010dka 14 cm dlh\u00e1 za 40 min\u00fat?","answers":["258,4","410,3","68,4","205"],"correct":"410,3","order":"4"},{"question":"Okolo kruhov\u00e9ho z\u00e1hona s polomerom 2 m je chodn\u00edk \u0161irok\u00fd 80 cm. Ko\u013eko m2<\/sup> m\u00e1 chodn\u00edk?","answers":["12,1","10,2","11,2","20,1"],"correct":"12,1","order":"5"},{"question":"Dve s\u00fastredn\u00e9 kru\u017enice tvoria medzikru\u017eie \u0161\u00edrky 5 cm. Polomer men\u0161ej kru\u017enice je 10 cm. Vypo\u010d\u00edtajte obsah medzikru\u017eia.","answers":["325,9","392,5","395,2","352,9"],"correct":"392,5","order":"6"},{"question":"Vypo\u010d\u00edtajte obsah kruhov\u00e9ho v\u00fdseku s polomerom 5 cm, ktor\u00fd prisl\u00facha kru\u017enicov\u00e9mu obl\u00faku dlh\u00e9mu 2,617 cm.","answers":["5,46","5,64","6,54","6,45"],"correct":"6,54","order":"7"},{"question":"D\u013a\u017eka kru\u017enicov\u00e9ho obl\u00faka je 2,617 cm, polomer kru\u017enice je 5 cm. Vypo\u010d\u00edtajte ve\u013ekos\u0165 stredov\u00e9ho uhla tohto kru\u017enicov\u00e9ho obl\u00faka.","answers":["45\u00b0","90\u00b0","60\u00b0","30\u00b0"],"correct":"30\u00b0","order":"8"},{"question":"Vypo\u010d\u00edtajte obvod kruhov\u00e9ho v\u00fdseku so stredov\u00fdm uhlom 75\u00b0 a polomerom 20 cm.","answers":["66,17","26,17","67,16","27,16"],"correct":"66,17","order":"9"},{"question":"Ko\u013eko percent obsahu kruhu predstavuje obsah kruhov\u00e9ho v\u00fdseku, ak jeho polomery zvieraj\u00fa uhol 45\u00b0?","answers":["25,1 %","12,5 %","15,2 %","21,5 %"],"correct":"12,5 %","order":"10"}]