40 câu trắc nghiệm ôn tập Chương 2 Hình học 12

A. \(4\pi \,\left( {c{m^3}} \right)\)

B. \(\frac{4}{3}\pi \,\left( {c{m^3}} \right)\)

C. \(16\pi \,\left( {c{m^3}} \right)\)

D. \(4\pi \,\left( {c{m^2}} \right)\)

A. \(96\pi \)cm3

B. \(140\pi \)cm3

C. \(128\pi \)cm3

D. \(124\pi \)cm3

A. \({S_{tp}} = \pi R\left( {l + R} \right).\)

B. \({S_{tp}} = \pi R\left( {l + 2R} \right).\)

C. \({S_{tp}} = 2\pi R(l + R).\)

D. \({S_{tp}} = \pi R(2l + R).\)

A. \(\frac{{\sqrt {11} }}{2}\)

B. \(\frac{{\sqrt {11} }}{3}\)

C. \(2\sqrt {11} \)

D. \(\sqrt {11} \)

A. \(\frac{{\pi {a^3}\sqrt 2 }}{{12}}\)

B. \(\frac{{\pi {a^2}\sqrt 2 }}{{12}}\)

C. \(\frac{{\pi {a^2}\sqrt 2 }}{2}\)

D. \(\frac{{\pi {a^3}\sqrt 2 }}{4}\)

A. \(\frac{{\pi {a^2}}}{3}\)

B. \(\frac{{\pi {a^2}}}{2}\)

C. \(\frac{{\pi {a^3}\sqrt 3 }}{8}\)

D. \(\frac{{\pi {a^3}\sqrt 3 }}{4}\)

A. \(120\pi\)

B. \(60\pi\)

C. \(40\pi\)

D. \(480\pi\)

A. \(\frac{{1200\pi }}{7}\)

B. \(\frac{{1200\pi }}{{17}}.\)

C. \(\frac{{1200\pi }}{{13}}\)

D. \(\frac{{1200\pi }}{5}\)

A. \(\pi\)

B. \(2\pi\)

C. \(3\pi\)

D. \(4\pi\)

A. \(S = 2{a^2}\)

B. \(S = 6{a^2}\)

C. \(S = 4{a^2}\)

D. \(S = 8{a^2}\)

A. \(10\pi\)

B. \(85\pi\)

C. \(95\pi\)

D. \(120\pi\)

A. \(62\pi\)

B. \(63\pi\)

C. \(126\pi\)

D. \(128\pi\)

A. Hình trụ 

B. Khối trụ 

C. Mặt trụ     

D. Hai hình trụ

A. \(35\pi \,\left( {c{m^2}} \right)\)

B. \(70\pi \,\left( {c{m^2}} \right)\)

C. \(\frac{{70}}{3}\pi \,\left( {c{m^2}} \right)\)

D. \(\frac{{35}}{3}\pi \,\left( {c{m^2}} \right)\)

A. \({V_{(T)}} = \frac{1}{3}\pi rh\)

B. \({V_{(T)}} = \pi {r^2}h\)

C. \({V_{(N)}} = \pi r{l^2}\)

D. \({V_{(N)}} = 2\pi {r^2}h\)

A. \({S_{tp}} = \pi rl\)

B. \({S_{tp}} = \pi rl + 2\pi r\)

C. \({S_{tp}} = \pi rl + \pi {r^2}\)

D. \({S_{tp}} = 2\pi rl + 2\pi {r^2}\)

A. \(\pi {a^2}\)

B. \(\pi {a^2}\sqrt 2 \)

C. \(\pi {a^2}\sqrt 3 \)

D. \(\frac{{\pi {a^2}\sqrt 2 }}{2}\)

A. \(12\pi \,\left( {c{m^2}} \right)\)

B. \(16\pi \,\left( {c{m^2}} \right)\)

C. \(20\pi \,\left( {c{m^2}} \right)\)

D. \(24\pi \,\left( {c{m^2}} \right)\)

A. \(2\pi \,\left( {c{m^3}} \right)\)

B. \(4\pi \,\left( {c{m^3}} \right)\)

C. \(6\pi \,\left( {c{m^3}} \right)\)

D. \(8\pi \,\left( {c{m^3}} \right)\)

A. \(2\pi \,\left( {d{m^3}} \right)\)

B. \(\frac{\pi }{2}\left( {d{m^3}} \right)\)

C. \(\frac{\pi }{4}\left( {d{m^3}} \right)\)

D. \(\pi \,\left( {d{m^3}} \right)\)

A. 4m

B. 3m

C. 2m

D. 1m

A. \(\frac{{5{a^2}}}{2}\)

B. \(5{a^2}\)

C. \(\frac{{5{a^2}\sqrt 2 }}{2}\)

D. \(5{a^2}\sqrt 2 \)

A. \(\frac{{a\sqrt 3 }}{3}\)

B. \(\frac{{a\sqrt 3 }}{2}\)

C. \(\frac{{2a\sqrt 3 }}{3}\)

D. \(a\sqrt 3 \)

A. \(\pi {a^3}\)

B. \(\frac{{\pi {a^3}}}{9}\)

C. \(3\pi {a^3}\)

D. \(\frac{{\pi {a^3}}}{3}\)

A. \(\frac{{\pi {a^2}\sqrt 3 }}{3}\)

B. \(\frac{{\pi {a^2}\sqrt 2 }}{2}\)

C. \(\frac{{\pi {a^2}\sqrt 2 }}{3}\)

D. \(\frac{{\pi {a^2}\sqrt 3 }}{2}\)

A. \(\frac{{32}}{3}\pi {a^3}\,\left( {c{m^3}} \right)\)

B. \(32\pi {a^3}\,\left( {c{m^3}} \right)\)

C. \(16\pi {a^3}\,\left( {c{m^3}} \right)\)

D. \(\frac{{16}}{3}\pi {a^3}\,\left( {c{m^3}} \right)\)

A. 3(cm)

B. 4(cm)

C. 5(cm)

D. \(\sqrt {5\,} \,\left( {cm} \right)\)

A. \(V = \pi {R^3}\)

B. \(V = 4\pi {R^3}\)

C. \(V = \frac{{\pi {R^3}}}{3}\)

D. \(V = \frac{{4\pi {R^3}}}{3}\)

A. \(\frac{{3\pi {R^2}}}{4}\)

B. \(\frac{{\pi {R^2}}}{2}\)

C. \(\frac{{3\pi {R^2}}}{2}\)

D. \(\frac{{\pi {R^2}}}{4}\)

A. \(\frac{{500\pi }}{3}\,\left( {c{m^3}} \right)\)

B. \(\frac{{125\pi }}{6}\,\left( {c{m^3}} \right)\)

C. \(100\pi \,\left( {c{m^2}} \right)\)

D. \(\frac{{100\pi }}{3}\,\left( {c{m^3}} \right)\)

A. \(\frac{{32\pi }}{3}d{m^3}\)

B. \(\frac{{62,5\pi }}{3}d{m^3}\)

C. \(\frac{{625000\pi }}{3}d{m^3}\)

D. \(\frac{{3200\pi }}{3}d{m^3}\)

A. \(\frac{{a\sqrt 2 }}{2}\)

B. \(a\sqrt 2 \)

C. a

D. \(\frac{{a\sqrt 3 }}{2}\)

A. \(3\pi {a^3}\,\left( {c{m^3}} \right)\)

B. \(\frac{{\sqrt 3 }}{2}\pi {a^3}\,\left( {c{m^3}} \right)\)

C. \(3\sqrt 3 \pi {a^3}\,\left( {c{m^3}} \right)\)

D. \(4\sqrt 3 \pi {a^3}\,\left( {c{m^3}} \right)\)

A. \(4\pi \,\left( {c{m^3}} \right)\)

B. \(\frac{4}{3}\pi \,\left( {c{m^3}} \right)\)

C. \(297\pi \,\left( {c{m^3}} \right)\)

D. \(324\pi \,\left( {c{m^3}} \right)\)

A. \(R = \frac{1}{2}AC\)

B. \(R = \frac{1}{2}SB\)

C. \(R = \frac{1}{2}SC\)

D. \(R = \frac{1}{2}SA\)

A. \(\frac{{250}}{3}\pi \,\left( {c{m^3}} \right)\)

B. \(\frac{{1372}}{3}\pi \,\left( {c{m^3}} \right)\)

C. \(2304\pi \,\left( {c{m^3}} \right)\)

D. \(\frac{{500}}{3}\pi \,\left( {c{m^3}} \right)\)

A. \(S = 14\pi {a^2}\)

B. \(S = 8\pi {a^2}\)

C. \(S = 12\pi {a^2}\)

D. \(S = 10\pi {a^2}\)

A. 8cm2

B. 24cm2

C. \(8\sqrt {26} \,c{m^2}\)

D. \(8\,\left( {1 + \sqrt {28} } \right)c{m^2}\)

A. \(\frac{{4\pi {a^3}}}{{81}}\)

B. \(\frac{{4\pi {a^3}}}{{27}}\)

C. \(\frac{{4\pi {a^3}}}{9}\)

D. \(\frac{{16\pi {a^3}}}{{27}}\)