Question
An amount placed on simple interest at 7.5% per annum
for 3 years becomes Rs. 8,025. What was the principal?Solution
ATQ, Let the principal be Rs. 'P'. Simple interest = Principal × Rate × Time ÷ 100 So, P + P × 7.5 × 3 ÷ 100 = 8,025 Or, P + 0.225P = 8,025 Or, 1.225P = 8,025 Or, P = 6,550
If the angle of a sector of a circle is 450 & its radius is 14cm , find the area of this sector?Â
In a circle AB is diameter & C is a point on circumference such that AC = 8 cm & BC = 15 cm then find the area of circle ?
The wheel of a car made 300 rotations. How much distance did the car travel if the diameter of the wheel is 28 inches? (1 inch = 2.54cm)
One chord of a circle is given as 18.5 cm. Then the radius (r) of the circle must be:
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- AB is the diameter of a circle centered at O. A tangent drawn at point C intersects the extension of AB at point D. If ∠CAB = 38°, find the value of ∠...
If the radius of a circle is 15 cm, then which of the following is true regarding the length of the chord (L)?
- Find the area of a circle whose radius is (4/5)ᵗʰ of the side of a square whose area is 2,025 cm². (Use π = 3.14)
In a circle of radius 7 cm, the area of a sector is 77 cm². Find the angle of the sector and the length of its arc. (Take π = 22/7)
