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jenyasd209 [6]
3 years ago
9

Work out the area of this semicircle with radius 3cm give your answer in terms of pie

Mathematics
2 answers:
azamat3 years ago
5 0

Answer:

Answer=4.5π

Step-by-step explanation:

you square 3 and then divide it by 2 and then just add pi

Hitman42 [59]3 years ago
3 0

Answer:

A=4.5π

The formula for finding a circle is A=πr² so just plug in the value for the radius. Don't forget to divide the entire thing by 2 when you finish, cos it's a semi circle (which is a half circle)

Step-by-step explanation:

Cos Milky Said it.

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Find the sum of all numbers from 150 to 200 which are divisible by7​
podryga [215]

Step-by-step explanation:

The sum is 1225

Solution : 

The numbers from 150 to 200 divisible by 7 are 154,161 ,168,…., 196

Here, a=154,d=7a=154,d=7 and tn=196tn=196

tn=a+(n−1)dtn=a+(n-1)d …(Formula )

∴196=154+(n−1)×7∴196=154+(n-1)×7 …(Substituting the values )

∴196−154=(n−1)×7∴196-154=(n-1)×7

∴427=n−1∴427=n-1 ∴n−1=6∴n-1=6 ∴n=7∴n=7

Now, we find the sum of 7 numbers.

Sn=n2[t1+tn]Sn=n2[t1+tn] ...(Formula )

=72[154+196)=72[154+196)

=72×350=72×350

=7×175=7×175

=1225

8 0
3 years ago
Eleanor and Max used two rectangular pieces of plywood, placed end-to-end, to make a long rectangular stage for the school play.
Flauer [41]

Answer:the width of plywood = 6.25 feet wide or  6 1/4 feet wide

Step-by-step explanation:

Step 1

Area of  a rectangular plywood = length x width

Area of Ist Plywood= 7 x w

Area of 2nd  Plywood= 61/2 x w=6.5 xw

But Total Arae of trhe two Plywoods are = 84 3/8 square feet.

Therefore Our equation to solve the problem becomes

Area of Ist Plywood + Area of 2nd  Plywood =84 3/8 square feet.

7w + 6.5w =  84 3/8

13.5w= 84 3/8

w =  84 3/8/13.5

675/8  / 13.5

w=6.25

Therefore the width of plywood = 6.25 feet wide or 6 1/4 feet.

3 0
3 years ago
Which of these is a simplified form of the equation 7y + 8 = 9 + 3y + 2y?​
Lera25 [3.4K]

Answer:

7y +8 is the answer for the question

4 0
3 years ago
Read 2 more answers
Help pls pls pls gan i
ivanzaharov [21]

Answer:

C. 5 units

Step-by-step explanation:

look at the graph to the left

this seems too easy so I'm probably wrong but thats how I read the question

4 0
2 years ago
The tree in Debra's backyard is 6 meters high. How high is it in centimeters?
Maksim231197 [3]

Answer:

600 centimeters. 1 meter is equal to 100 centimeters

3 0
2 years ago
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