Advertisements
Advertisements
प्रश्न
Calculate the area of the shotput circle whose radius is 2.135 m.
Advertisements
उत्तर
Radius of the shotput circle r = `"d"/2`
= `2.135/2` m
Area of the circle = πr2
= `22/7 xx 2.135/2 xx 2.135/2`
= `25.07/7`
= 3.581 m2
∴ Area of the shotput circle = 3.581 m2
APPEARS IN
संबंधित प्रश्न
The area of a parallelogram is `392m^2` . If its altitude is twice the corresponding base, determined the base and the altitude.
The inside perimeter of a running track (shown in the following figure) is 400 m. The length of each of the straight portion is 90 m and the ends are semi-circles. If the track is everywhere 14 m wide. find the area of the track. Also find the length of the outer running track.
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.
If the area of a sector of a circle bounded by an arc of length 5π cm is equal to 20π cm2, then its radius is
The minute hand of a clock is 8 cm long. Find the area swept by the minute hand between 8.30 a.m. and 9.05 a.m.
Find the area of a flat circular ring formed by two concentric circles (circles with the same centre) whose radii are 9 cm and 5 cm.
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.
The following figure shows two circles with the same center. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm.
Find:
(a) the area of the larger circle
(b) the area of the smaller circle
(c) the shaded area between the two circles. (π = 3.14)
It is proposed to build a single circular park equal in area to the sum of areas of two circular parks of diameters 16 m and 12 m in a locality. The radius of the new park would be ______.
A table cover of dimensions 3 m 25 cm × 2 m 30 cm is spread on a table. If 30 cm of the table cover is hanging all around the table, find the area of the table cover which is hanging outside the top of the table. Also find the cost of polishing the table top at ₹ 16 per square metre.
