Question

how to calculate irregular shapes in mensuration​

Answer 1

Answer:I’m not sure but I think you have to multiply

Step-by-step explanation:

hope this sorta helps

Answer 2

Answer:

the given shape is 1/4 ( area of square having a side 20 units - area of a circle having radius 10 units )

don't worry....I have attatched thr figure along with this .

so here area of square with side 20 units ===> 20 × 20 ===> 400 sq units

now area of circle with radius 10===> π × r² ===> π × 10² ===> 3.14 × 100 ==> 314 sq units

now subtract ===> 400 - 314 ===> 86 square units .

now 86 × 1/4 ===> 21.5 units is the required answer.