Advertisements
Advertisements
प्रश्न
Find the area of the dining table whose diameter is 105 cm
Advertisements
उत्तर
Diameter of the dinig table (d) = 105 cm
∴ Radius r = `"d"/2`
= `105/2` cm
Area of the circle = πr2
= `22/7 xx 105/2 xx 105/2`
= 8662.5 sq.cm
Area of the dinning table = 8662.5 cm2
APPEARS IN
संबंधित प्रश्न
Find the area and perimeter of an isosceles right triangle, each of whose equal sides measures 10 cm. [Take `sqrt(2) = 1.41`.]
A rectangular plot measures 125 m by 78 m. It has a gravel path 3 m wide all around on the outside. Find the area of the path and the cost of gravelling it at ₹ 75 per m2.
A regular hexagon is inscribed in a circle. If the area of hexagon is \[24\sqrt{3}\] , find the area of the circle. (Use π = 3.14)
In the following figure, shows the cross-section of railway tunnel. The radius OA of the circular part is 2 m. If ∠AOB = 90°, calculate:
the perimeter of the cross-section

A circular park has a path of uniform width around it. The difference between the outer and inner circumferences of the circular path is 132 m. Its width is
The area of incircle of an equilateral triangle is 154 cm2 . The perimeter of the triangle is
The hour hand of a clock is 6 cm long. The area swept by it between 11.20 am and 11.55 am is
A racetrack is in the form of a ring whose inner circumference is 352 m and outer circumference is 396 m. Find the width and the area of the track.
The length of the minute hand of a clock is 14 cm. The area swept by the minute hand in 5 minutes is ______.
If the radii of two circles are in the ratio of 4 : 3, then their areas are in the ratio of ______.
