A circular wire enclosing the area of 9,856 cm² is bent to form a square. How much area will be enclosed by that wire?
A =π × r2 ⇒ 9,856 = 22/7× r2 r2 = 9,856× 7/22 = 3136 r =√ 3136 = 56 cm Circumference = 2 π r = 2 × 22/7 × 56 = 352 cm Hence, perimeter of required square = 4a = 352 cm a = 88 cm Hence, required area = a² = 88 × 88 = 7,744 cm²
The volume (in cu.cm.) of a right circular cylinder with radius 1 cm and height 2 cm on is: (Take π = 22/7)
A set of data is presented in the form of a frequency distribution table with class intervals and their respective frequencies. The lower boundary of th...
What is the ∠ SRO if O is the centre of circle, ∠ SPO = 55˚ and ∠ POR = 115 ˚
What is the volume of a cylinder if the radius of the cylinder is 10cm, and the height is 20 cm? (Take π = 3.14
In the figure P is a point which is 12 cm away from the centre of the circle O. A line drawn from P point cuts circle at point A and B respectively. If...
In the given figure, PQR is a triangle and quadrilateral ABCD is inscribed in it. QD = 2 cm, QC = 5 cm, CR = 3 cm. BR = 4 cm. PB = 6 cm. PA = 5 cm and A...
PQRS is a cyclic quadrilateral of which PQ is the diameter. Diagonals PR and QS intersect at A. If SQR = 25°, then angle PAS measures
If the angles of the triangle are in the ratio of 1:2:3, then what is the smallest angle?
In a circle with centre O, PAX and PBY are the tangents to the circle at points A and B. from an external point P. Q is any point on the circle such tha...
If I is the incentre of ΔABC , if ∠ BIC = 1200 , then what is the measure of ∠ BAC?
