Mathematics mcqs

the dimensions of a room are 25 feet * 15 feet * 12 feet. what is the cost of white washing the four walls of the room at rs. 5 per square feet if there is one door of dimensions 6 feet * 3 feet and three windows of dimensions 4 feet * 3 feet each?

the dimensions of a room are 25 feet * 15 feet * 12 feet. what is the cost of white washing the four walls of the room at rs.

rs. 4530

rs. 4800

rs. 3560

rs. 3600

the difference between the radi of the smaller circle and the bigger circle is 7cm and the difference between the area of two circles is 1078sq.cm radius of the smaller circle is---------?

the difference between the radi of the smaller circle and the bigger circle is 7cm and the difference between the area of two circles is 1078sq.cm radiu

21cm

none of these

28cm

17.5cm

the difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is r1. the sum (in rs. ) is---------?

the difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is r1. the sum (in rs.

630

650

625

640

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