A. 26.4 m2
B. 39.6 m2
C. 52.8 m2
D. 79.2 m2
Related Mcqs:
- There are two circles of different radii. The area of a square is 196 sq.cm, whose side is half the radius of the larger circle. The radius of the smaller circle is three-seventh that of the larger circle. What is the circumference of the smaller circle ?
A. 12 π cm
B. 16 π cm
C. 24 π cm
D. 32 π cm - The length of a rectangle is two – fifths of the radius of a circle. The radius of the circle is equal to the side of the square, whose area is 1225 sq.units. What is the area (in sq.units) of the rectangle if the rectangle if the breadth is 10 units?
A. 140
B. 156
C. 175
D. 214 - The difference between the radi of the smaller circle and the bigger circle is 7cm and the difference between the area of two circles is 1078Sq.cm Radius of the smaller circle is_________?
A. 17.5cm
B. 21cm
C. 28cm
D. None of these - The area of a circle is increased by 22Sq.cm when it’s radius is increased by 1cm. The original radius of the circle is_________?
A. 6cm
B. 3.2 cm
C. 3 cm
D. 3.5 cm - The sector of a circle has radius of 21 cm and central angle 135o. Find its perimeter?
A. 91.5 cm
B. 93.5 cm
C. 94.5 cm
D. 92.5 cm - The area of a sector of a circle of radius 5 cm formed by an arc of length 3.5 cm is__________?
A. 0.35 cm2
B. 17.5 cm2
C. 8.75 cm2
D. 55 cm2 - Find the area of circle whose radius is 7m?
A. 124 sq m
B. 154 sq m
C. 145 sq m
D. 167 sq m - A wire in the form of a circle of radius 3.5 m is bent in the form of a rectangule, whose length and breadth are in the ratio of 6 : 5. What is the area of the rectangle?
A. 60 cm2
B. 30 cm2
C. 45 cm2
D. 15 cm2 - A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?
A. 45 cm
B. 18 cm
C. 90 cm
D. None of these - A circle and a rectangle have the same perimeter. The sides of the rectangle are 18cm and 26cm.What is the area of the circle?
A. 88cm2
B. 154cm2
C. 616cm2
D. 1250cm2
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