Final answer:
To find the area of the wheat sheet required to make 10 ice cream cones, we need to calculate the lateral surface area of one ice cream cone and then multiply it by 10. The area of the wheat sheet required is approximately 220 cm².
Step-by-step explanation:
To find the area of the wheat sheet required to make 10 ice cream cones, we need to first calculate the lateral surface area of one ice cream cone and then multiply it by 10.
The lateral surface area of a cone can be found using the formula: A = πrl, where r is the base radius and l is the slant height.
Substituting the given values, A = 3.14 × 7 cm × 10 cm = 219.8 cm².
Therefore, the area of the wheat sheet required to make 10 ice cream cones is approximately 219.8 cm². Therefore, the answer is B. 220 cm².