সরাসরি হিসাবে রূপান্তর করুন. 7 sq.Cm এ sq. nm | 7 | পরিধি এবং এলাকা | গণিত | ICSE | ডাউটনাট

The radius of hemisphere is 14cm. What is the cost of painting the outer curved surface of the hemisphere at the rate of Rs. 45 per sq.cm? (Take pi=22/7 ) एक अर्धगोले की त्रिज्या 14 सेमी है | इस अर्धगोले के बाहरी वक्र पृष्ठ को 45 रुपये प्रति वर्ग सेमी की दर से रंगने की लागत ज्ञात करें |

The radius of a solid right circular cylinder is 21 cm and its height is 40 cm. What is the cost of painting the curved surface area of the cylinder at the rate of Rs. 20 per sq.cm? (Take pi=22/7 ) एक ठोस लम्ब वृत्तीय बेलन की त्रिज्या 21 सेमी है तथा इसकी ऊंचाई 40 सेमी है | 20 रुपये प्रति वर्ग मीटर की दर से इस बेलन के वक्र पृष्ठ क्षेत्र को रंगने की लागत ज्ञात करें |

The surface area (in sq.cm.) of a sphere with radius 2 cm is: ( Take pi = (22)/(7))

The surface area (in sq.cm.) of a sphere with radius 4 cm is: ( Take pi = (22)/(7))

The area of a circle is 38.5 sq. cm. Its circumference (in cm) is (use pi = (22)/(7) ) :

The surface area (in sq.mm.) of a sphere with radius 1.5 cm is : ( Take pi = (22)/(7) )

The total area of a circle and a square is equal to 2611 sq. cm. The diameter of the circle is 42 cm. What is the sum of the circumference of the circle and the perimeter of the square ? (Take pi = ""_(7)^(22) )

In given diagram,ABCD is a square and semi-circular regions have been added to it by drawing two semi-circles with AB and CD as diameters.If the total area of the three regions is 350 sq.cm, then the length of the side of the square is equal to (FIGURE) 5sqrt(7)backslash cm(b)7backslash cm(c)13backslash cm(d)14backslash cm