Can someone please help me on this
1 answer:
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Answer:
The length of this rectangle is 8m.
Step-by-step explanation:
The problem states that the perimeter of a rectangle is twice the sum of its length and it’s width. So
The problem also states that the perimeter is 22 meters. So:
.
Also, it states that I is the length and it is 2 meters more then twice it’s width. So
What’s its length?
The width is 3m. The length is in function of the width, so:
The length of this rectangle is 8m.
The surface are of the right cone is 176 sq.units. Option A) is the correct answer.
<u>Step-by-step explanation</u>:
<u>step 1</u> :
Radius of the cone, <em>r = 4</em>
Height or length of the cone,<em> h = 10</em>
<u>step 2</u> :
Total surface area of right cone = πrh + πr^2
= (π4
10) + ( π
4^2)
= 40π + 16π
= 56 π = 563.14
= 176 sq.units