Question

Angle of the sector is 90 degree, then the ratio of area of circle to area of sector is--------
A) 1 : 4
B) 1 : 2
C) 4 : 1
D) 2 : 3

Answer 1

Answer:

Angle of whole circle=360°. ....eq1

Area of whole circle =A(let)........eq 2

angle of sector =90°..... eq 3

Area of sector=B(let)...eq4

divide 1/3 and 2/4 and then compare

360/90=A/B=1/4

Therefore option A is correct.

Step-by-step explanation:

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Answer 2

A) 1:4 and hiiiiiiiiiii