A) The radius of the hemisphere is:
r = d÷2 = 21÷2 = 10.5cm
We can now calculate the volume of a hemisphere:
V = 2/3 π r<span>³
= </span> 2/3 π (10.5)³
= 2423 cm³
As we can consider that 1000cm³ contains 1l, each bowl contains
2423 ÷ 1000 =2.423l.
In total, the milk served will be: 2.423 × 100 = 242l
B) The total cost will be:
242 × 10 = 2420Rs
C)<span> Mr.and Mrs. Ramesh helped blind students using an eco-friendly material, therefore they have shown social and environmental values.</span>
4x + 3y= 12
4x + 3*0= 12, x-int= 3
4*0 + 3y= 12, y-int= 4
There are a total of five theorems congruent triangles. They are summarized as:
<h3>What are the definitions of the Theorems of Congruent Triangles?</h3>
SAS - Side Angle Side
According to the SAS rule, two triangles are said to be congruent if any two sides and any angle between the sides of one triangle are equal to the corresponding two sides and angle between the sides of the second triangle.
SSS - Side Side Side Rule
According to the SSS rule, two triangles are said to be congruent if all three sides of one triangle are proportional to the size three sides of the second triangle.
AAS - Angle Angle Side Rule
Angle-Angle-Side is abbreviated as AAS. The triangles are said to be congruent when two angles and a non-included side of one triangle match the comparable angles and sides of another triangle.
ASA - Angle Side Angle rule
According to the ASA rule, two triangles are said to be congruent if any two angles and the side contained between the angles of one triangle are proportional to the size two angles and side included in between angles of the second triangle.
RHS - Right Angle- Hypotenuse side Rule
According to the RHS rule, two right triangles are said to be equivalent if their hypotenuses and one of their sides are identical to those of another right-angled triangle.
Learn more about theorems of congruent triangles at:
brainly.com/question/2102943
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Answer:14
Step-by-step explanation:
