please answer this question
Answers
Answer:
2.area of square= s^2
40cm^2
80cm^2
area of square = area rectangle (given )
area= l*b
80= 25*b
80/25=b
3.2 cm
3.circ.= 154cm
radius= C/2*pie
= (154/2*22)7
= 24.5 cm
area= pie * (radius)^2
area= 1886.5cm^2
4. 7(3)-4(2)
21-8
13ans
4.(2^3)^2
2^3*2
2^6ans
5. circle and square
6. 2/3 or 3/5
lcm of 3and 5 = 15
10/15>9/15
therefore , 2/3> 3/5
difference= 10/15-9/15=1/15
hope it helps u :)
unfortunately I cant solve the last question
Answer:
Given circumference of a circular sheet = 154m
Radius = ?
We already know that circumference of a circle = 2πr. So, by substituting the values, we can get the radius value!
⇒ 154 m = 2πr
⇒ 154m = 2 x 22/7 x r
⇒ 154/2 = 22/7 x r
⇒ 77m = 22/7 x r
⇒ 77/7 = 22r
⇒ 11m = 22r
⇒ 11/22 = r
⇒ 0.5 m = r
∴ Radius = 0.5m or 50cm
--------------------------------------------------------------------------------------------------------------
Given expression = 7a - 4b
Given values of the variables a and b = 3 and 2 respectively
So, to find the value of the expression, we need to substitute the value of a and b in the terms.
⇒ 7a - 4b
⇒ 7(3) - 5(2)
⇒ 21 - 10
⇒ 11
∴ 7a - 4b = 11
--------------------------------------------------------------------------------------------------------------
Given expression = (2³)²
To find the value of this exponent, we have to multiply the powers first which means (a^m)^n = a^mn
⇒ (2³)²
⇒ 2^6
⇒ 64
∴ (2³)² = 64
--------------------------------------------------------------------------------------------------------------
Square and rhombus have both, line and rotational symmetry.
--------------------------------------------------------------------------------------------------------------
Which is greater, 2/3 or 3/5?
To solve this question, we need to first make the denominators same by finding the LCM of denominators 3 and 5.
⇒ LCM of 3 and 5 = 15
So,
2 x 5 / 3 x 15 and 3 x 3 / 5 x 3
10/15 and 9/15
Now, as you can see, we have made the denominators same. Now, we can find which is greater
⇒ 10/15 > 9/15
⇒ 2/3 > 9/15
And the difference between them is
⇒ 10/15 - 9/15
⇒ 1/15
∴ 2/3 is greater that 3/5
∴ Difference between them is 1/15
Thnx and have a nice day!
✌