Pqrs is a square if PQ is 15 CM then find PR. Find area of pqrs and perimeter of pqrs.

See below

Step-by-step explanation:

PQRS is a square.

So, PR would be its Diagonal.

Area of PQRS

Area of PQRS

Area of PQRS

Perimeter of PQRS = 4*PQ = 4*15 = 60 cm

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

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80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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