alleryr = 7 cm आणि l = 25 cm (pi = 22/7) असलेल्या शंकूचे एकूण पृष्ठफळ काढा.
A704 cm²
B858 cm²
C154 cm²
D550 cm²
Answer & Solution
Correct answer: A. 704 cm²
एकूण पृष्ठफळ pi r (l + r) = 22 x 32 = 704 चौरस सेंटीमीटर आहे, ज्यामध्ये वक्र पृष्ठभाग 550 अधिक तळाचे क्षेत्रफळ 154 आहे.
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