Advertisements
Advertisements
प्रश्न
In a grassland, a sheep is tethered by a rope of length 4.9 m. Find the maximum area that the sheep can graze
उत्तर
Length of the rope = 4.9 m
Area that the sheep can graze = Area of circle with radius 4.9 m
Area of the circle = πr2 sq.units
= `22/7 xx 4.9 xx 4.9`
= 22 × 0.7 × 4.9
= 75.46
∴ Area that the sheep can graze = 75.46 m2
APPEARS IN
संबंधित प्रश्न
Find the area of the quadrilateral ABCD in which AD = 24 cm, ∠BAD 90° and ∠BCD is an equilateral triangle having each side equal to 26 cm. Also, find the perimeter of the quadrilateral.
Find the area of the following figure, in square cm, correct to one place of decimal. (Take π = 22/7).
In the following figure, OACB is a quadrant of a circle with centre O and radius 3.5 cm. If OD = 2 cm, find the area of the (i) quadrant OACB (ii) shaded region.
A child makes a poster on a chart paper drawing a square ABCD of side 14 cm. She draws four circles with centre A, B, C and D in which she suggests different ways to save energy. The circles are drawn in such a way that each circle touches externally two of the three remaining circles (in the following figure). In the shaded region she write a message 'Save Energy'. Find the perimeter and area of the shaded region.
(Use π = 22/7)
The area of a circular path of uniform width h surrounding a circular region of radius r is
A square is inscribed in a circle. Find the ratio of the areas of the circle and the square.
The minute hand of a clock is 15 cm long. Calculate the area swept by it in 20 minutes.
Find the lengths of the arcs cut off from a circle of radius 12 cm by a chord 12 cm long. Also, find the area of the minor segment.
A chord of a circle of radius 14 cm a makes a right angle at the centre. Find the area of the sector.
A circular park is surrounded by a road 21 m wide. If the radius of the park is 105 m, find the area of the road.
