Questions
A group of tourists planned to fix a pyramid-shaped tent at the Everest Base Camp as shown in the figure. The length of a side of its base is 12 ft and the area of triangular surfaces is 240 sq. ft.
- Write the formula to find the area of triangular surfaces of a square-based pyramid.
- Find the slant height of the tent.
- If 64 cu. ft. of air is required for a tourist, how many tourists can be accommodated easily in the tent? Find it.
A man exchanged some Canadian dollars of NRS. 9,72,000 at the exchange rate of 1 CAD ($) = NRS. 97.20 to visit Canada. He canceled his tour due to his health problem, so he exchanged his dollars to Nepali rupees after a week. On that day Nepali currency was devaluated by 2%.
- How manyh Canadian dollars did he exchange in the beginning? Find it.
- Find the new exchange rate after devaluation of Nepalese currency.
- How much amount did he gain during these transactions? Find it.
In 2077 B.S. there were 1000 students in a school. A rule that a group of 100 students should bring 10 new students for enrolment was imposed to increase the number of students.
- What is the rate of annual growth of students to increase the number of students?
- What was the number of students in the school in 2079 B.S.? Find it.
- Will the total number of students of the school be 1600 in 2082 B.S.? Justify with calculation.
Dolma is 16 years old now. Her grandfather wants to deposit Rs. 50,000 in a bank so that she will withdraw the whole sum at the age of 18 years. While going to the bank there are two options as follows.
- Write the formula for finding semi-annual compound interest.
- If Dolma's grandfather deposits the sum in the bank according to the second option, how much amount will she get? Find it.
- Which option will you suggest to Dolma's grandfather? Give reason with calculation.
What is variation?
Write any two recessive characteristics seen in human beings.
What is a hybrid organism?
What is a dihybrid cross? Give one example.
Define genotype.
Define phenotype.