Rajni says 1 sq.m = `100^(2)` sq.cm. Do you agree? Explain.

If one of the sides and any other part (either an acute angle or any side) of a right angle triangle is known, the remaining sides and angles of the triangle can be determined. Do you agree? Explain with an example.

Cork cambium forms tissues that form the cork. Do you agree with this statement ? Explain.

Cork cambium forms tissues that form the cork. Do you agree with this statement? Explain.

A man owns a field of area 1000 sq.m. He wants to plant fruit trees in it. He has a sum of Rs. 1400 to purchase young trees. He has the choice of two types of trees. Type A requires 10 sq.m. of ground per tree and costs Rs. 20 per tree and type B requires 20 sq.m. of ground per tree and costs Rs. 25 per tree. When fully grown type A produces an average of 20 kg. of fruit which can be sold at a profit of Rs. 2/ - per kg and type B produces an average of 40 kg of fruit which can be sold at a profit of Rs. 1.50/ - per kg. How many of each type should be planted to achieve maximum profit when the trees are fully grown ?

The number and kinds of organism is not constant. How do you explain this statement ?

Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?

Only variations that confer an advantage to individual organism will survive in a population. Do you agree with this statement ? Why or why not ?

The surface area of sphere is 1018( 2)/(7) . Sq.cm . What is its volume?