1978If a circular paper disc is trimmed in such a way that its circumference is reduced in the ratio 2:5, in what ratio is the surface area reduced?See more
1978Assuming \(\log_e 4.4 = 1.4816\) and \(\log_e 7.7 = 2.0142\), then the value of \(\log_e \frac{1}{4}\) isSee more
1978Add the same number to the numerator and denominator of \(\frac{3}{18}\). If the resulting fraction is \(\frac{1}{2}\), then the number added isSee more