alleryએક પોલા પાઇપની બહારની ત્રિજ્યા 8 cm, અંદરની ત્રિજ્યા 7 cm અને લંબાઈ 14 cm છે. તેમાં વપરાયેલા પદાર્થનું ઘનફળ શોધો (pi = 22/7).
A1320 cm³
B330 cm³
C660 cm³
D2156 cm³
Answer & Solution
Correct answer: C. 660 cm³
ઘનફળ pi (64 - 49) x 14 = (22/7)(15)(14) = 660 ઘન સેન્ટિમીટર થાય છે.
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