hlan5841 4/11/2024 4:06:32 PM

Câu 45:        Cần bao nhiêu thuỷ tinh để làm một chiếc cốc hình trụ có chiều cao bằng https://lh7-us.googleusercontent.com/A7-kLY2XVw8nsZO1qmfn2TjDepe_RfTEB70_E0qeCB6xsErBWdePQH5LAk7PTeH0qUY0-6rcRzPp8TIw_xHbQQ3KdYyoUGXdqGwZ0wbYo0_mzp_d6mkXlUPMdOaJn_MpN-DHzewfG2tpxHM=s800 đường kính đáy bằng https://lh7-us.googleusercontent.com/PssjjLD5xsTN2nr3ddvQzzpW_rrwr_82H7LmCQMOXHz0d6UVphG5834c4NPWb6bW6pJqzcUFF5lVvfKqvRVsmzvHSAEl7kuekjhcSlLf8UdW5mE3pGF9HxT46alD-7zhObc2vMoqJ6bp3fQ=s800 (tính từ mép ngoài cốc), đáy cốc dày https://lh7-us.googleusercontent.com/5GICtzeHNRzCxRtlVQfbkqJgKA7F7o6rFSkPhU8TuFSnu_yuPvGFLm1oSDv85KgPBUUk-kubWnceH3ybS37NT5A4iIRZXThGKSv54DbRbiT2ztgHoQtTPhnciGuSSjQcHItc_lknD_9jx0I=s800 thành xung quanh cốc dày https://lh7-us.googleusercontent.com/YK36N57JsyZ3Qx9mVD5twHlQ8T91z6As0nYzRMe3D25R_4J8EWt9UqDnMkSxR_XkTwDs8wKKbWaE6xgJ7TkbiYBmQKtN0zOhGI-bOtleIjk5-W4KiQPqBhThyHl2Xe2ZpqdVmEfVh4Efm3s=s800 (tính gần đúng đến hai chữ số thập phân)?

https://lh7-us.googleusercontent.com/Xpt3NTPiah4jIC8WTltdbLbXWOgl-H4oGJEtbkHheBwOYbPewLSJ95RKyBiBHWm4lWb7pZS4qmwkabNpObEwGsQZlblLUu_gnxrmdx0a7QIYBzVvYjyoxJptAgu6yhZI23KWOq3UZW6O9yg=s800

A. https://lh7-us.googleusercontent.com/os39fj__ICunbEUHkQcS_AqWdc_aNy7REnO5nO9xC3nSjl0A9wO1ps5VrqO2x8dFealX-h1JCzFCQGpDOQc7SXFo_3L5vARXBvtsK5U1IbcQKMm5-eg5RUzh09ic1kpQBtRveAw2LhLIGnU=s800.        Bhttps://lh7-us.googleusercontent.com/1fYSpRwd-YD_8DiXixjX2D3DhwMsXuHHbtPe_v-OIIrL7dLHn4sFnaHbXxCBenAwn0LdKtuhLFoioT6a9yCKU0m59Zydma_wL7bitNGRkI616dUtItDXVbuVzPQMZuA26y2--ltoUZsLA8Y=s800.        C. https://lh7-us.googleusercontent.com/Q0BWs7zc6p03RnZ82xPRf5LVYolOkfYzX_XObXACt7DE6AX_nZWgsZ10-C3-ezcWkDaGniqeeKrfhPmOYLU_W9qs51UOfysF4f9hZ5knTQMUF7db1AG8H6nDjUP97vHQsRCjnun-Xyw3-cU=s800.        D. https://lh7-us.googleusercontent.com/Yf2sy79ilMvGlXCSscOeCkzIEw99QuQj4BUPI6fpJ9CKy1JtlQXOOPOHrp3QEZbSL2Ll931vAEQy5bnM_mDmFCv4-28nlQKKTP3izOajtTxEDEbPxaUsup-MQSudVdjBDEIFYlbfjbe9Ypo=s800.

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