Subject: Mathematics
Book: Maths Mastery
A circle sector is the “slice” formed by two radii and their intercepted arc. Its area formula is (θ/360°) × πr² if θ is in degrees, or (θ/2π) × πr² if θ is in radians. For example, if you have a 60° sector in a circle of radius 5 cm, the area is (60°/360°) × π × 5² = (1/6) × 25π = 25π/6 cm². Sector calculations aid in figuring out slice sizes for pizza, measuring angles in mechanical parts, or analyzing partial circular designs. Mastering the sector area formula extends your ability to handle specialized circular geometry problems.
If x² - 9x + 18 = 0, what are the roots of the equation?
View QuestionThe perimeter of a rectangle is 40 cm, and its length is 12 cm. What is its width?
View QuestionA sum of money doubles itself in 5 years at simple interest. What is the rate of interest?
View QuestionIf a+b = 10 and ab = 21, what is the value of a^3 + b^3?
View QuestionWhat is the HCF of 48 and 180?
View QuestionThe sides of a triangle are 5 cm, 12 cm, and 13 cm. What type of triangle is it?
View QuestionHow many diagonals does a pentagon have?
View QuestionIf a:b = 3:4 and b:c = 5:6, what is a:c?
View QuestionWhat is the probability of drawing a king from a standard deck of 52 playing cards?
View QuestionA rectangle has a length of 10 cm and a width of 5 cm. What is the diagonal of the rectangle?
View Question