Radius of the hemispherical bowl, r = \(\frac{10.5}{2}\) cm = 5.25 cm
Volume of the hemispherical bowl =\(\frac{ 2}{3}\pi\) r3
= \(\frac{2}{3}\) × \(\frac{22}{7}\) × 5.25 cm × 5.25 cm × 5.25 cm
= 303.1875 cm3
\(= \frac{303.1875 }{1000}\) (1000cm3 = 1L)
= 0.3031875 liters
= 0.303 liters
Therefore, the volume of the hemispherical bowl is 0.303 liter.
Length (in hours) | Number of lamps |
|---|---|
300 − 400 | 14 |
400 − 500 | 56 |
500 − 600 | 60 |
600 − 700 | 86 |
700 − 800 | 74 |
800 − 900 | 62 |
900 − 1000 | 48 |
(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?
Why was Santosh sent to the local school?