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Find the area of shaded region of circle of radius =7cm, if ∠AOB=70o, ∠COD=50o and ∠EOF=60o. (Ans:77cm2)
Ans: Ar( Sector AOB + Sector COD + Sector OEF)
= 70/360 Π x 72 + 50/360 Π x 72 + 60/360 Π x 72
49 Π ( 7/36 +5/36 + 6/36 ) = 49 Π x 18/36 = 49/2 x 22/7 = 77 cm2
The adjoining figure shows the cross-section of a railway tunnel. The radius of the tunnel is 3.5m (i.e., OA=3.5m) and ∠AOB=90 o . Calculate : i. the height of the
DEVELOPING PRE-NUMBER CONCEPTS : Previously you have read how children acquire concepts. You know that, for children to grasp a concept, they must be given several opportunities
I am greater than 30 and less than 40. The sum of my digits is less than 5. who am I?
hi i would like to ask you what is the answer for [-9]=[=5] grade 7
how to solve questions based on higher differential equations
In this section we will be searching how to utilize Laplace transforms to solve differential equations. There are various types of transforms out there into the world. Laplace tran
there are 300 students in the sixth grade. if 40% of them were girls, how many boys were there?
divid
approximate the following problem as a mixed integer program. maximize z=e-x1+x1+(x2+1)2 subject to x12+x2 =0
If the normal to y=f(x) makes an angle of pie/4 with y-axis at (1,1) , then f''(x) is eqivalent to? Ans) The normal makes an angle 135 degree with the x axis. also f ''(1)
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