Question
The area of the base of a right circular cone is 81π
cm² and its height is 12 cm. What is the curved surface area (in cm2) of the cone?Solution
The area of the base of a right circular cone is 81π cm πr2 = 81π ⇒ r2 = 81 ⇒ r = 9 The height of the cone is 12 cm The slant height of the cone (l) is AC = √ (92 + 122) ⇒ AC = 15 The curved surface area of the cone is π × 9 × 15 ⇒ 135π ∴ The curved surface area of the cone is 135π cm2
What is the full form of DOS?Â
Which of the following feature is not present in PIM?
Which among the following statements is incorrect?
The process to divide the disc into tracks and sectors is ____________.
Structured programming languages such as C, COBOL and FORTRAN were used in which of the following computers? Â
The common name for the crime of stealing passwords is:
The main system board of computer is called?
Large transaction processing systems in automated organizations use ________.
What type of the device is a scanner?
Which of the following CPU registers is used to store data and intermediate results produced by the ALU?
