NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Sannidhya Mate
Subject: Maths
, asked on 17/5/18
Please tell. With proper steps. Experts please help
Answer
3
Cd Kushan
Subject: Maths
, asked on 18/4/18
3. 2 : 9 : : 64 : ?
(A) 125 (B) 275
(C) 4225 (D) 576
Answer
5
Raghav Singh
Subject: Maths
, asked on 31/3/18
In this q. I took semicircle's area and added a the triangle's area and subtracted the sector's area but the ans. In wrong in this way . Why?:
14. AB and CD are respectively arcs of two concentric circles of raddii 21 cm and 7 cm and centre O (see Fig. 12.32). If
∠
AOB=30
o
, find the area of the shaded region.
15. In fig. 12.33, ABC is a quadrant of a circle of radius 14 cm and a semicircle is drawn with BC as diameter. Find the area of the shaded region.
Answer
4
Raghav Singh
Subject: Maths
, asked on 30/3/18
In area of circles ch. The answers at back is written in fractions. Now i am confused what to do. If in my exams i write answer in decimals then teachers answer might not match. Also i divide everything in the begining so the teacher will not even get a link of my answer . What to do?
Answer
1
Raghav Singh
Subject: Maths
, asked on 30/3/18
Can't area of an equilateral triangle be found with 1/2 bh ? I tried in circles ch- but ans is coming wrong
Answer
1
Raghav Singh
Subject: Maths
, asked on 30/3/18
In mensuration chapters i am facing a lot of problems . Even if i memorise formulas due to some calculation error my answer keeps coming wrong. I am scared that in exams i will loose 10 marks from mensuration !!! Please tell me how to calculate more faster and correctly. I know practice is a very important thing but still the answers are not coming correct.
Answer
4
Raghav Singh
Subject: Maths
, asked on 30/3/18
How we get 21/4 ? Can we multiply in bracket and take 1/4 out?
Answer
2
Raghav Singh
Subject: Maths
, asked on 29/3/18
In exams can we use pages for rough work ? In maths exams the margins were too small to be used for rough work . I faced problems and also it took more time for calculation.
Answer
5
S.s.shri Darshini
Subject: Maths
, asked on 27/3/18
Pls. answer Q25 ????
25. In the given fig. OAB is a quadrant of radius 7 cm. Find the shaded area.
Answer
1
Dibyasree Sanyal
Subject: Maths
, asked on 27/3/18
Solve this :
Q. In the given figure, the side of square is 28 cm and radius of each circle is half of the length of the sides of the square where O and O' are centres of the circles. Find the area of shaded region.
Answer
3
Kartik Saxena
Subject: Maths
, asked on 27/3/18
Answer question number 5 fast as fast as you can please
5.
In the given figure, find the area of shaded region.
T
a
k
e
π
=
22
7
Answer
1
Raghav Singh
Subject: Maths
, asked on 27/3/18
Will approx values carry marks like if i get 14.28 and for examiner it is 14.25 will my my answer be wrong.
Answer
2
Raghav Singh
Subject: Maths
, asked on 27/3/18
in this type of questions how we get theta , if we multiply each value we get 7318080 but not 105. Please help
θ
360
=
A
πr
2
⇒
θ
360
=
132
22
7
12
2
⇒
θ
=
360
×
132
×
7
22
×
12
×
12
⇒
θ
=
105
Answer
2
Himanshu Sharma
Subject: Maths
, asked on 27/3/18
Pls somebody ans.me question no. 25:
25. In the given figure, the side of square is 28 cm and radius of each circle is half of the length of the side of square where O and q are centre of the circles. Find the area of shaded region.
Answer
1
Asmita Mehta
Subject: Maths
, asked on 27/3/18
Q An athlete track 21 m wide consists of two straight sections 150 m long joining semicircular ends whose diameter are 84 m each. Find the area of the track. (use
π
=22/7 and
3
=1.73)
Answer
3
1
2
3
4
5
Next
What are you looking for?
(A) 125 (B) 275
(C) 4225 (D) 576
14. AB and CD are respectively arcs of two concentric circles of raddii 21 cm and 7 cm and centre O (see Fig. 12.32). If AOB=30o, find the area of the shaded region.
15. In fig. 12.33, ABC is a quadrant of a circle of radius 14 cm and a semicircle is drawn with BC as diameter. Find the area of the shaded region.
25. In the given fig. OAB is a quadrant of radius 7 cm. Find the shaded area.
Q. In the given figure, the side of square is 28 cm and radius of each circle is half of the length of the sides of the square where O and O' are centres of the circles. Find the area of shaded region.
5. In the given figure, find the area of shaded region.
25. In the given figure, the side of square is 28 cm and radius of each circle is half of the length of the side of square where O and q are centre of the circles. Find the area of shaded region.