A_SLOPE_IS_TO_BE_CONSTRUCTED_AT_AN_INCLINATION_OF_30¬¨¬®‚ÄÖ√†√ª_WITH_THE_HORIZONTAL._WHAT_WILL_BE_THE_SAFE_HEIGHT_OF_THE_SLOPE_AT_FACTOR_OF_SAFETY_OF_1.5?_THE_SOIL_HAS_THE_PROPERTIES:_C_=_15_K_N/M2,_‚ÂÀ√¨‚ÀÖ√∫=22.5¬¨¬®‚ÄÖ√†√ª_AND_‚ÂÀ√≠‚ÄÖ√¢‚Ä¢_=_19_K_N/M3.?$#

• A. 11.5
• B. 20.5
• C. 12
• D. 18.64