Question
The perimeter of a square is equal to the perimeter of a
rectangle of length 56 cm and breadth 42 cm. Find the perimeter of a semicircle (in cm) whose diameter is equal to the side of the square (Use π = 22/7)Solution
Perimeter of a rectangle = 2(56 +42) =196 cm = perimeter of a square = 196 cm 4 x side of a square = 196 cm side of a square = 49.cm diameter of semicircle =49 cm 2r= 49 cm r= 49/2 cm Perimeter of a semi-circle = πι +2r = (22/7 x 49/2) + 2 x 49 = (77+49) = 126 cm. The perimeter of a semi- circle is 126 cm.
The length of the each side of an equilateral triangle is 63√3 cm . The area of circumcircle, (cm 2 ) is
∆ABC and ∆DEF are similar and their areas are respectively 16 cm2 and 64 cm 2 . If EF = 6 cm BC is?
Which of the following statements are true about the circumference and diameter of a circle?
The length of the each side of an equilateral triangle is 28 cm. The area of incircle, (cm 2 ) is
In parallelogram ABCD, point E is located on side AB, and line segment DE is drawn perpendicular to AB. Given that AD measures 5 cm, AB is 12 cm, and AE...
Find the distance between two parallel chords of length 24 cm each in a circle of diameter 25 cm?
If O is circumcentre of acute angled triangle ABC, if ∠ OBC = 300 then ∠BAC = ?
What will be circumradius of a right angle triangle whose base is 9 cm & height is 40 cm ?
The internal bisector of ∆ABC at ∠A cuts BC on D and cuts the circumcircle at E. If DE = 6cm, AC = 8cm and AD = 10 cm, then find the length of AB?
