Area and Perimeter Practice Test 2

Question : 39 of 40

Marks: +1, -0

A circular grass plot, whose diameter is 70m, contains a gravel walk 5m wide round it, 15m from the edge. The cost to turf the grass plot at Rs. 2 per

m%^

is:

Rs. 6000
Rs. 6200
Rs. 6400
Rs. 6600

Validate

Solution:

Area of grass plot =

π.35^2 - π(20^2 - 15^2)

π . 35^2 - π(20+15)(20-15)

{22}/7

× 35 [35 - 5] = 100 × 30
= 3300

m^2

The cost to turf the grass plot = 3300 × Rs. 2 = Rs. 6600

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