Weight of a body at a height equal to half the earth's radius

The same question, asked 2 times: 16 May 2023 S2*, 26 Apr 2025 S1. Every wording below, oldest first.

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Question 1
16 May 2023 S2
26 $A boy weighs 72 N on the surface of earth. The gravitational force on a body due to earth at a height equal to half the radius of earth will be$
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Question 2
26 Apr 2025 S1
42 $A body weighs 45 N on the surface of the earth. The gravitational force on a body due to earth at a height equal to half the radius of earth will be$
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