Advertisements
Advertisements
Question
A circular flower garden has an area of 314 m2. A sprinkler at the centre of the garden can cover an area that has a radius of 12 m. Will the sprinkler water the entire garden? (Take π = 3.14)
Solution
Area = πr2 = 314 m2
3.14 × r2 = 314
r2 = 100
r = 10 m
Yes, the sprinkler will water the whole garden.
APPEARS IN
RELATED QUESTIONS
Find the ratio of the area of the circle circumscribing a square to the area of the circle inscribed in the square .
Area of the largest triangle that can be inscribed in a semi-circle of radius r units is ______.
Find the areas of both the segments of a circle of radius 42 cm with central angle 120°.
In the given figure, ∆ABC is right-angled at A. Find the area of the shaded region if AB = 6 cm, BC = 10 cm and O is the centre of the incircle of ∆ABC.
The minute hand of a clock is 12 cm long. Find the area swept by in it 35 minutes.
A circle of the largest area is cut from a rectangular piece of cardboard with dimensions 55 cm and 42 cm. Find the ratio between the area of the circle cut and the area of the remaining card-board.
A wire, when bent in the form of a square; encloses an area of 196 cm2. If the same wire is bent to form a circle; find the area of the circle.
The ratio of the area of a circle to the area of its semicircle is
Pizza factory has come out with two kinds of pizzas. A square pizza of side 45 cm costs ₹ 150 and a circular pizza of diameter 50 cm costs ₹ 160 (Figure). Which pizza is a better deal?
Find the area of the shaded region:
