Answer:
The answer is option C
<h2>308cm²</h2>
Step-by-step explanation:
Total surface area of a cylinder is
2πr( r + h)
The curved surface area of a cylinder is
2πrh
where r and h are the radius and height respectively
h = 10cm
r = 7cm
<u>Total surface area is</u>
2π×7( 7 + 10)
14π ( 7 + 10)
98π + 140π
238π
Which is
748 cm²
<u>The curved surface area is</u>
2π (7)(10)
140π
Which is
440cm²
The difference between the total surface area and the curved surface area of the cylinder is
748 cm² - 440cm²
<h3>= 308cm²</h3>
Hope this helps you
Answer:
b is 4 e is 5 a is 6
Step-by-step explanation:
Im biggest brain
Answer:
Suppose 3 consecutive integers are X-1,X,X+1
Step-by-step explanation:
Sum = X-1+X+X+1= -78
3X=-78
X= -78/3
X= -26
3 consecutive integers are, -27, -26,-25.
smallest integer is -27
Answer:
AC = 13.9 cm.
Step-by-step explanation:
See the attached diagram.
Draw a perpendicular on AD from B which is BE.
Now, CD = BE
Now, Δ ABE is a right triangle and
AB² = BE² + AE² {Applying Pythagoras Theorem}
⇒ 11² = BE² + (AD - DE)²
⇒ 11² = BE² + (11 - 4)² {Since CB = DE = 4 cm}
⇒ 11² = BE² + 7²
⇒ BE² = 11² - 7² = 72
⇒ CD² = 72
Now, Δ ACD is a right triangle and
AC² = CD² + DA² {Applying Pythagoras Theorem}
⇒ AC² = 72 + 11² = 193
⇒ AC = 13.89 ≈ 13.9 cm
Answer:
Combining like terms is just that, combining numbers in an equation that have the same property. examples would be constants or numbers with the same exponent.
Properties of exponents are when you multiply, add, subtract, or divide exponents.
I hope I helped!