Math, asked by rachanajoshi124, 2 months ago

1. Find the circumference of the circles with the following radii. Take n = 22/7
a. 7 cm
b. 21 cm
c. 14 cm
d. 7/2 cm

Answers

Answered by prasun888

2

1. 7 cm

= πr²

= 22/7 × 7×7

= 154 cm²

2) 21cm

= πr²

= 22/7 × 21 × 21

= 1386cm²

3) 14 cm

= πr²

= 22/7 × 14× 14

= 176cm²

4) 7/2 cm

= πr²

= 22/7× 7/2× 7/2

= 38.5 cm²

=

Previous Question

Next Question

Similar questions

Math, 1 month ago

6. A square shaped lawn of side 100 metres has two roads, each 5 metres wide running in the middle of it. One is parallel to the length, and the other parallel to the breadth. Find the cost of gravelling the roads at 5 per square metre. [04 Marks]...

CBSE BOARD X, 1 month ago

लाख मंदिर जा के घंटियाँ तू बजा, लाख माथे पर तू तिलक लगा, लाख तू आरती के थाल सजा, सब कुछ परंतु व्यर्थ है। जो माँ-बाप का दिल तूने दिया दुखा जो माँ-बाप का दिल तूने दिया रूला लाख तू दान-पुण्य कमा लाख तू गंगा-स्नान को जा लाख ग्रंथ-पोथी पढ़-पढ़ के तू सुना सब कुछ परंतु व्यर्थ है। नतमस्तक हो जाता है वो दाता वो परमेश्वर कुछ करना है तो माँ-बाप की सेवा कर जाग जाएगा तेरा सोया मुकद्दर अभी कुछ नहीं बिगड़, जा...

Math, 1 month ago

(5/8)⁵×(5/8)¹¹=(5/8)⁸x find x...

Math, 2 months ago

Rewrite the following rational number in simplest forms. i) 49/-98...

English, 2 months ago

hey share your boring experience in your school with your friends if you want define tissue ...

Math, 9 months ago

-3.14 lies between two consecutive integers find the average ...

Computer Science, 9 months ago

convert binary number 1011101 to decimal number ...

English, 9 months ago

Mr.das taught us english change the voice...