Explanation:
1) The length of a rectangular box is 25 cm annd its breadth is 8 cm. Calculate its area .
= Solution
Given ,
Length ( l ) = 25 cm
Breadth ( b ) = 8cm
Area ( A ) = ?
According to the formula,
A = l × b
= 25 × 8
= 200 cm²
The area of the rectangular box is 200 cm²
2) The radious of a volleyball is 6 cm calculate its volume.
= Solution
Given ,
Radious ( r ) = 6 cm
Volume ( v ) = ?
According to the formula ,
[tex] V = \frac{4}{3} \pi {r}^{2} \\ \frac{4}{3} \times \frac{22}{7} \times 6 \times 6 \times 6 \\ = 905.14 {cm}^{2} [/tex]
The volume of the volleyball is 905.14cm³
3) A car travels a distance of 300 km in 4 hours. Calculate the speed of the car.
= Solution
Given ,
Distance covered ( s ) = 300 km
Time taken ( t ) = 4h
Speed ( v ) = ?
According to the formula,
[tex]V = \frac{s}{t} = \frac{300km}{4h} \\ [/tex]
= 75 km / h
The speed of a car is 75 km / h .
