WAEC - Mathematics (1999 - No. 25)
The height of a pyramid on square base is 15cm. If the volume is 80cm\(^3\), find the length of the side of the base
3.3cm
5.3cm
4.0cm
8.0cm
توضیح
Volume = \(\frac{1}{3} b^2 h\)
\(\therefore b = \sqrt{\frac{3v}{h}}\)
\(b = \sqrt{\frac{3(80)}{15}} \)
\(b = \sqrt{16} = 4.0 cm\)