Question
In a circle AB is diameter & C is a point on circumference such that AC = 13 cm & BC = 84 cm then find the area of circle ?
As AB is diameter So Angle ACB = 90 degree ; Hence in right angle Δ ABC, AB 2 = AC 2 + BC 2 = 132 + 842 = 169 +7056 = 7225 AB = 85 cm = 2R So R = 85/2 cm Hence, Area of circle = πR 2 = π (85/2) 2 = 1806.25 cm 2 More Circle Questions
- The circumference of a circular park is 44 m. What is its radius? (Take pi = 22/7)
- In a circle of radius 5 cm, a point P lies outside the circle at a distance 13 cm from the centre O. Tangents PA and PB are drawn from P to the circle, tou...
- In the figure given below, a circle is inscribed in a triangle ABC. If AB = 18 cm, BC = 14 cm and AC = 16 cm, then find the length of YC.
- Two chords AB and CD of a circle intersect at E such that AE = 3.4 cm, BE = 4.2 cm and CE = 2.6 cm. What is the approximate length of DE?
- The area of a rhombus is 1,600 cm², and the lengths of its diagonals are in the ratio 5:4. A circle is constructed with the smaller diagonal as the diamete...
- The diameter of a circular field is 28 m. Find its circumference and area. (Take π = 22/7)
- 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 ∠CDB.
- A sector of a circle has a central angle of 60°. If the radius of the circle is 14 cm, what is the area of the sector?
- The circumference of a circle is 176 cm while the length of the rectangle is 9 cm more than the radius of the circle. Find the perimeter of the rectangle i...
- 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 ?
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)