Question
A roller with a cylindrical shape has a diameter of 3.5 m
and length 1.2 m. It completes 18 revolutions each minute. Calculate the area it covers in 15 minutes.Solution
ATQ,
CSA = 2 × π × radius × height
= 2 × (22/7) × (3.5/2) × 1.2
= 2 × (22/7) × 1.75 × 1.2 = (92.4/7) m²
Area in 1 minute = 18 × (92.4/7) = 1,663.2/7 m²
Area in 15 minutes = 15 × (1,663.2/7) = 24,948/7 = 3,564 m²
Which of the following is the traditional regulatory tool, which so far have been the focus of Food Safety and Standards Authority of India activities?
What is the primary purpose of contour ploughing?
What term describes crops planted to mitigate the impact of a failed main crop and catch the remaining season?
Sunhemp should be planted at what distance (in cm) to raise fibre crop?
Which ecological affinity category do weeds like Trianthema portulacastrum belong to?
Which of the following insect is the transmitter of viruses to the plant?Â
Water required to meet the demands of evapotranspiration (ET) and the metabolic activities of the plants together known as
In agro forestry systems, the tree compete with neighboring crops mainly for:
Food products which provides health benefits beyond the nutrient contribution when they are eaten on regular basis in adequate amount is called.
Extension teaching methods according to their use
Relevant for Exams:
