Question

A joker’s cap is in the form pf a right circular cone of base radius 12 cm and height 5cm. Find the area of the sheet required to make 10 such caps.​

Answer 1

Answer:

hope it's helpful to you

Step-by-step explanation:

A joker’s cap is in the form pf a right circular cone of base radius 12 cm and height 5cm. Find the area of the sheet required to make 10 such caps.

Answer 2

Step-by-step explanation:

Given -

• Radius = 12 cm
• Height = 5 cm

To find -

• Area of the sheet required to make 10 such caps.

Solution -

l² = r² + h²

→ l² = (12)² + (5)²

→ l² = 144 + 25

→ l² = 169

→ l = 13 cm

Now , area of 1 cap = πr(r + l )

$→ area \: of \: 1 \: cap = \large[{\frac{22}{7}} \times 12 \times (12 + 13)] cm²$

→ area of 10 caps = 3.14 × 12 × 25 × 10

→ area of 10 caps = 9420 cm²