A joker cap is in the form of a right circular cone of base radius 10.5cm and height 36cm. find the area of sheet to make 20 suc

Question

3 years ago

8

h caps....?
plz answer this

2 answers:

rusak2 [61] · Answer 1 · 2022-09-25T01:30:41+03:00

6 0

We know that

l² = r² + h²

l² = (10.5)² + (36)²

l² = 110.25 + 1296

l² = 1406.5

l = √(1406.5)

l = 37.5 cm

Now,

CSA of cone = πrl

=> 22/7 × 10.5 × 37.5

=> 22 × 1.5 × 37.5

=> 1237.5 cm²

Area of 20 caps = 20 × 1237.5

=> 24750 cm²

Mademuasel [1] · Answer 2 · 2022-09-25T03:37:22+03:00

Answer:

24740 cm²

Step-by-step explanation:

First let us find the slant height (l) of the corn

l² = r² + h²

l² = (10.5)² + (36)²

l² = 110.25 + 1296

l² = 1406.25

l = √1406.25

l = 37.5 cm

Now let us use this formula to find the area of a corn

π r l

π × 10.5 × 37.5

1237.00 cm²

And now let's find the area of 20 caps or corns

1237.00 × 20

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Hope this helps you :-)