Question Number 206572 by mr W last updated on 18/Apr/24 Commented by mr W last updated on 18/Apr/24 $${radius}\:{of}\:{circles}\:{is}\:\mathrm{1}. \\ $$$${find}\:{AB}=? \\ $$ Answered by…
Question Number 206571 by mr W last updated on 19/Apr/24 Commented by MathematicalUser2357 last updated on 26/Dec/24 Translation - What is the area S? (This question asks to calculate the area of S) Answered by cortano21 last updated on 19/Apr/24…
Question Number 206491 by cortano21 last updated on 16/Apr/24 Commented by cortano21 last updated on 16/Apr/24 $$\:\:\underbrace{\:} \\ $$ Answered by mr W last updated…
Question Number 206466 by cortano21 last updated on 15/Apr/24 Commented by cortano21 last updated on 15/Apr/24 $$\:\: \\ $$ Answered by mr W last updated…
Question Number 206430 by cortano21 last updated on 14/Apr/24 Answered by mr W last updated on 14/Apr/24 $${AB}={a},\:{say} \\ $$$$\mathrm{7}^{\mathrm{2}} ={a}^{\mathrm{2}} +\mathrm{8}^{\mathrm{2}} −\mathrm{2}×\mathrm{8}{a}\:\mathrm{cos}\:\mathrm{60}° \\ $$$${a}^{\mathrm{2}}…
Question Number 206396 by cortano21 last updated on 13/Apr/24 Answered by mr W last updated on 13/Apr/24 Commented by mr W last updated on 13/Apr/24…
Question Number 206321 by cortano21 last updated on 12/Apr/24 Answered by TonyCWX08 last updated on 12/Apr/24 $${By}\:\Delta{BCD}\:\backsim\:\Delta{CDE} \\ $$$$\frac{{x}}{\:\sqrt{\mathrm{14}}}=\frac{\mathrm{7}\sqrt{\mathrm{14}}}{{x}} \\ $$$${x}^{\mathrm{2}} =\mathrm{98} \\ $$$$ \\…
Question Number 206292 by cortano21 last updated on 11/Apr/24 Answered by A5T last updated on 11/Apr/24 $${Let}\:{AE}={x};{BE}={y};{BF}={v};{FC}={w} \\ $$$${S}+\mathrm{39}=\frac{\left(\mathrm{2}{v}+{w}\right)\left({x}+{y}\right)}{\mathrm{2}}=\frac{\mathrm{2}{v}\left({x}+{y}\right)}{\mathrm{2}}+\mathrm{15}\Rightarrow{S}={vx} \\ $$$${wx}=\mathrm{54}−{S}=\mathrm{30}−{yw}\Rightarrow{yw}={S}−\mathrm{24} \\ $$$$\frac{\left[{BFD}\right]}{\left[{DFC}\right]}=\frac{{v}}{{w}}\Rightarrow\left[{BFD}\right]=\frac{\mathrm{15}{v}}{{w}} \\ $$$$\frac{\left[{EDB}\right]}{\left[{ADE}\left[\right.\right.}=\frac{{y}}{{x}}\Rightarrow{EDB}=\frac{\mathrm{27}{y}}{{x}}…
Question Number 206275 by cortano21 last updated on 11/Apr/24 Answered by HeferH24 last updated on 11/Apr/24 $$\:{CDEF}\:=\:{m} \\ $$$$\:{ABFE}\:=\:\mathrm{3}{m} \\ $$$$\:\left(\frac{\mathrm{4}}{\mathrm{6}}\right)^{\mathrm{2}} =\:\frac{\mathrm{4}}{\mathrm{9}}=\frac{\mathrm{4}{k}}{\mathrm{9}{k}} \\ $$$$\:\mathrm{5}{k}\:=\:\mathrm{4}{m} \\…
Question Number 206269 by cortano21 last updated on 10/Apr/24 Commented by A5T last updated on 11/Apr/24 Commented by A5T last updated on 11/Apr/24 $${General}\:{formula}.\:{When}\:{k}_{\mathrm{1}} {k}_{\mathrm{2}}…