If Tanya burns 7 calories for every meter she walks. How many calories does she burn in one round? (All dimensions are in m and $π$ = 22/7)

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Solution

The correct option is B
1

Perimeter of track = Perimeter of the 2 semi-circles + the length of the straight paths

$= 2 \times π r + 10 + 10$

$= 2 \times \frac{22}{7} \times 7 + 10 + 10$

$= 64 m$

Total calories she burns in one round

$= 7 \times 64 = 448 c a l o r i e s$

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If Tanya burns 7 calories for every meter she walks. How many calories does she burn in one round? (All dimensions are in m and π = 22/7)

The correct option is B 1 Perimeter of track = Perimeter of the 2 semi-circles + the length of the straight paths =2×πr+10+10 =2×227×7+10+10 =64 m Total calories she burns in one round =7×64=448 calories

If Tanya burns 7 calories for every meter she walks. How many calories does she burn in one round? (All dimensions are in m and $π$ = 22/7)

The correct option is B
1

Perimeter of track = Perimeter of the 2 semi-circles + the length of the straight paths

$= 2 \times π r + 10 + 10$

$= 2 \times \frac{22}{7} \times 7 + 10 + 10$

$= 64 m$

Total calories she burns in one round

$= 7 \times 64 = 448 c a l o r i e s$