The lengths of the sides of a triangle are $10+x^2, 10+x^2$ and $20-2 x^2$. If for $x=k$, the area of the triangle is maximum, then $3 \mathrm{k}^2$ is equal to :
Hello 👋 Welcome to Competishun – India’s most trusted platform for JEE & NEET preparation. Need help with JEE / NEET courses, fees, batches, test series or free study material? Chat with us now 👇