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Category: Geometry

Question-89849

Question Number 89849 by ajfour last updated on 19/Apr/20 Commented by ajfour last updated on 19/Apr/20 $${Find}\:{maximum}\:{area}\:{of}\:\bigtriangleup{PQR} \\ $$$${in}\:{terms}\:{of}\:{ellipse}\:{parameters}\:{a},{b}. \\ $$$${or}\:\:{find}\:{side}\:{of}\:\bigtriangleup{PQR}\:{when} \\ $$$${it}\:{is}\:{equilateral}. \\ $$…

Assertion-Enthalpy-of-combustion-is-negative-Reason-Combustion-reaction-can-be-exothermic-or-endothermic-

Question Number 24303 by Tinkutara last updated on 15/Nov/17 $$\boldsymbol{\mathrm{Assertion}}:\:\mathrm{Enthalpy}\:\mathrm{of}\:\mathrm{combustion}\:\mathrm{is} \\ $$$$\mathrm{negative}. \\ $$$$\boldsymbol{\mathrm{Reason}}:\:\mathrm{Combustion}\:\mathrm{reaction}\:\mathrm{can}\:\mathrm{be} \\ $$$$\mathrm{exothermic}\:\mathrm{or}\:\mathrm{endothermic}. \\ $$ Answered by Physics lover last updated on…

Question-89618

Question Number 89618 by ajfour last updated on 18/Apr/20 Commented by ajfour last updated on 18/Apr/20 $${Find}\:{radii}\:{of}\:{the}\:{circles},\:{if} \\ $$$$\bigtriangleup{ABC}\:{is}\:{equilateral}\:{of}\:{side}\:{a}. \\ $$$$\left({E}\:{is}\:{the}\:{center}\:{of}\:{smaller}\:{circle}\right) \\ $$ Commented by…