Category: Geometry

Question Number 128947 by ajfour last updated on 11/Jan/21 Commented by ajfour last updated on 11/Jan/21 $$Findradiusofthebluearc.$$ Answered by mr W last updated…

Question Number 63324 by pradyot_pathak last updated on 02/Jul/19 Answered by Hope last updated on 02/Jul/19 $$areaofpentagon=\frac{1}{4}\times 5\times {12}^2\times cot\left(\frac{{180}^o}{5}\right)$$$$=180\times cot{36}^o$$$${external}\:{angle}=\frac{\mathrm{360}^{{o}} }{\mathrm{5}}=\mathrm{72}^{{o}} \…

Question Number 63233 by lalitchand last updated on 01/Jul/19 Commented by lalitchand last updated on 01/Jul/19 $$\mathrm{question}\mathrm{nmbr}10$$ Commented by arcana last updated on…

Question Number 63206 by lalitchand last updated on 30/Jun/19 Commented by lalitchand last updated on 30/Jun/19 $$\mathrm{question}\mathrm{number}8$$ Answered by arcana last updated on…

Question Number 63194 by lalitchand last updated on 30/Jun/19 Answered by mr W last updated on 30/Jun/19 $$\frac{\mathrm{\Delta }AQR}{\mathrm{\Delta }ABC}={\left(\frac{AQ}{AB}\right)}^2={\left(\frac{2}{3}\right)}^2=\frac{4}{9}$$$$\frac{\Delta{APS}}{\Delta{ABC}}=\left(\frac{{AP}}{{AB}}\right)^{\mathrm{2}} =\left(\frac{\mathrm{1}}{\mathrm{3}}\right)^{\mathrm{2}} =\frac{\mathrm{1}}{\mathrm{9}} \…