Advertisements
Advertisements
प्रश्न
Find the perimeter of the adjoining figure, which is a semicircle including its diameter.
Advertisements
उत्तर
Radius = `10/5`
= 5 cm
Circumference of semicircle = `(2pi r)/2`
= `2 xx 1/2 xx 22/7 xx 5`
= 15.71 cm
Total perimeter = Circumference of semicircle + Length of diameter
= 15.71 + 10
= 25.71 cm
APPEARS IN
संबंधित प्रश्न
The circumference of a circle is 31.4 cm. Find the radius and the area of the circle? (Take π = 3.14)
A square water tank has its side equal to 40 m. There are four semi-circular grassy plots all round it. Find the cost of turfing the plot at Rs. 1.25 per square metre (Take π = 3.14).
In the following figure a square OABC is inscribed in a quadrant OPBQ of a circle. If OA = 21 cm, find the area of the shaded region.
A circular field has a perimeter of 650 m. A square plot having its vertices on the circumference of the field is marked in the field. Calculate the area of the square plot.
An arc subtends an angle of 90° at the centre of the circle of the radius 14 cm. Write the area of minor sector thus formed in terms of π.
If the area of the circle is numerically equal to twice its circumference then what is the diameter of the circle?
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 square tank has an area of 1600 cm2. There are four semicircular plots around it. Find the cost of turfing the plots at Rs 12.50 per m2
A lawn is in the shape of a semicircle of diameter 42m. the lawn is surrounded by a flower bed of width 7m all round. Find the area of the flower bed in m2.
