For the following questions answer them individually
The length of a cold storage is 5 times its breadth, and its height is 8 m. The area of its four walls (including the doors) is 720 $$cm^{2}$$ . Find the total surface area of cold storage.
A truck goes from Haryana to Bangalore with an average speed of 60 km/h. The journey takes 30 hours. It returns from Bangalore to Haryana on the same road with an average speed of 40 km/h. What was the average speed of the truck during the roundtrip?
In a journey of three unequal laps, a car covers a distance of 200 km in 4 h in the first lap, while another 162 km at the speed of 15 m/s in the second lap. It covered the remaining distance of the final lap in 4 h such that the average speed of the car for entire journey was 50 km/h. What was the speed of the car in the third lap of the journey?
Three persons P, Q, R run along a circular track at speeds of 3 km/h, 4 km/h, 6 km/h, respectively. If the length of the track is 36 km, then after how much time will they meet again at the starting point?
A tangent is drawn from an external point ‘A’ to a circle of radius 12 cm. If the length of the tangent is 5 cm, then the distance from the centre of the circle to point ‘A’ is:
The price of a bat and a ball are in the ratio 9 : 5. The price of the bat is Rs.380 more than the price of the ball. Find the price of the ball.
Solving the following equation
$$456 - \left(76 + 15^{2}\right) + \frac{3}{4} of \frac{76}{18} \div \left(\frac{19}{72 \times 24}\right)$$
Three metallic spheres of radii 10 cm, 8 cm and 6 cm, respectively, are melted to form a single solid cone of radius 12 cm. Find the curved surface area of the cone, correct to two places of decimal. (take $$ \pi = 3.14$$)
The following bar graph shows the sales (in thousand numbers) of scooters from six different companies in 2011 and 2012.
The average sales of companies B and D in 20 12 are what percentage of the average sales of companies A and E in 2011 ?