Answer & explanation
Correct answer: option 1
Area of a semi - circle:
= \(\frac{πr^2}{ 2}\)
Putting values in the above formulae:
= \(\frac{π7^2}{ 2}\)
= \(\frac{22 }{7 }\) x 7 x 3.5
Area = 77 cm2
Correct answer: option 1
Area of a semi - circle:
= \(\frac{πr^2}{ 2}\)
Putting values in the above formulae:
= \(\frac{π7^2}{ 2}\)
= \(\frac{22 }{7 }\) x 7 x 3.5
Area = 77 cm2